Link to release page from what's new section (#1514)

No hardcoded language in the URL and uses the correct docs.github.com domain.

.github/workflows/check-dist.yml

@@ -24,10 +24,10 @@ jobs:
     steps:
       - uses: actions/checkout@v3
 
-      - name: Set Node.js 16.x
+      - name: Set Node.js 20.x
         uses: actions/setup-node@v1
         with:
-          node-version: 16.x
+          node-version: 20.x
 
       - name: Install dependencies
         run: npm ci

.github/workflows/codeql-analysis.yml

@@ -42,7 +42,7 @@ jobs:
       uses: actions/checkout@v3
 
     - name: Initialize CodeQL
-      uses: github/codeql-action/init@v1
+      uses: github/codeql-action/init@v2
       with:
         languages: ${{ matrix.language }}
         # If you wish to specify custom queries, you can do so here or in a config file.
@@ -55,4 +55,4 @@ jobs:
     - run: rm -rf dist # We want code scanning to analyze lib instead (individual .js files)
 
     - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v1
+      uses: github/codeql-action/analyze@v2

.github/workflows/test.yml

@@ -13,7 +13,7 @@ jobs:
     steps:
       - uses: actions/setup-node@v1
         with:
-          node-version: 16.x
+          node-version: 20.x
       - uses: actions/checkout@v3
       - run: npm ci
       - run: npm run build
@@ -72,6 +72,43 @@ jobs:
         shell: bash
         run: __test__/verify-side-by-side.sh
 
+      # Filter
+      - name: Fetch filter
+        uses: ./
+        with:
+          filter: 'blob:none'
+          path: fetch-filter
+
+      - name: Verify fetch filter
+        run: __test__/verify-fetch-filter.sh
+
+      # Sparse checkout
+      - name: Sparse checkout
+        uses: ./
+        with:
+          sparse-checkout: |
+            __test__
+            .github
+            dist
+          path: sparse-checkout
+
+      - name: Verify sparse checkout
+        run: __test__/verify-sparse-checkout.sh
+
+      # Sparse checkout (non-cone mode)
+      - name: Sparse checkout (non-cone mode)
+        uses: ./
+        with:
+          sparse-checkout: |
+            /__test__/
+            /.github/
+            /dist/
+          sparse-checkout-cone-mode: false
+          path: sparse-checkout-non-cone-mode
+
+      - name: Verify sparse checkout (non-cone mode)
+        run: __test__/verify-sparse-checkout-non-cone-mode.sh
+
       # LFS
       - name: Checkout LFS
         uses: ./

.github/workflows/update-main-version.yml

@@ -1,5 +1,5 @@
 name: Update Main Version
-run-name: Move ${{ github.event.inputs.main_version }} to ${{ github.event.inputs.target }}
+run-name: Move ${{ github.event.inputs.major_version }} to ${{ github.event.inputs.target }}
 
 on:
   workflow_dispatch:
@@ -7,11 +7,13 @@ on:
       target:
         description: The tag or reference to use
         required: true
-      main_version:
+      major_version:
         type: choice
-        description: The main version to update
+        description: The major version to update
         options:
+          - v4
           - v3
+          - v2
 
 jobs:
   tag:
@@ -25,6 +27,6 @@ jobs:
         git config user.name github-actions
         git config user.email github-actions@github.com
     - name: Tag new target
-      run: git tag -f ${{ github.event.inputs.main_version }} ${{ github.event.inputs.target }}
+      run: git tag -f ${{ github.event.inputs.major_version }} ${{ github.event.inputs.target }}
     - name: Push new tag
-      run: git push origin ${{ github.event.inputs.main_version }} --force
+      run: git push origin ${{ github.event.inputs.major_version }} --force

CHANGELOG.md

@@ -1,5 +1,48 @@
 # Changelog
 
+## v4.1.0
+- [Add support for partial checkout filters](https://github.com/actions/checkout/pull/1396)
+
+## v4.0.0
+- [Support fetching without the --progress option](https://github.com/actions/checkout/pull/1067)
+- [Update to node20](https://github.com/actions/checkout/pull/1436)
+
+## v3.6.0
+- [Fix: Mark test scripts with Bash'isms to be run via Bash](https://github.com/actions/checkout/pull/1377)
+- [Add option to fetch tags even if fetch-depth > 0](https://github.com/actions/checkout/pull/579)
+
+## v3.5.3
+- [Fix: Checkout fail in self-hosted runners when faulty submodule are checked-in](https://github.com/actions/checkout/pull/1196)
+- [Fix typos found by codespell](https://github.com/actions/checkout/pull/1287)
+- [Add support for sparse checkouts](https://github.com/actions/checkout/pull/1369)
+
+## v3.5.2
+- [Fix api endpoint for GHES](https://github.com/actions/checkout/pull/1289)
+
+## v3.5.1
+- [Fix slow checkout on Windows](https://github.com/actions/checkout/pull/1246)
+
+## v3.5.0
+* [Add new public key for known_hosts](https://github.com/actions/checkout/pull/1237)
+
+## v3.4.0
+- [Upgrade codeql actions to v2](https://github.com/actions/checkout/pull/1209)
+- [Upgrade dependencies](https://github.com/actions/checkout/pull/1210)
+- [Upgrade @actions/io](https://github.com/actions/checkout/pull/1225)
+
+## v3.3.0
+- [Implement branch list using callbacks from exec function](https://github.com/actions/checkout/pull/1045)
+- [Add in explicit reference to private checkout options](https://github.com/actions/checkout/pull/1050)
+- [Fix comment typos (that got added in #770)](https://github.com/actions/checkout/pull/1057)
+
+## v3.2.0
+- [Add GitHub Action to perform release](https://github.com/actions/checkout/pull/942)
+- [Fix status badge](https://github.com/actions/checkout/pull/967)
+- [Replace datadog/squid with ubuntu/squid Docker image](https://github.com/actions/checkout/pull/1002)
+- [Wrap pipeline commands for submoduleForeach in quotes](https://github.com/actions/checkout/pull/964)
+- [Update @actions/io to 1.1.2](https://github.com/actions/checkout/pull/1029)
+- [Upgrading version to 3.2.0](https://github.com/actions/checkout/pull/1039)
+
 ## v3.1.0
 - [Use @actions/core `saveState` and `getState`](https://github.com/actions/checkout/pull/939)
 - [Add `github-server-url` input](https://github.com/actions/checkout/pull/922)

CODEOWNERS

@@ -1 +1 @@
-* @actions/actions-runtime
+* @actions/actions-launch

README.md

@@ -1,10 +1,10 @@
 [![Build and Test](https://github.com/actions/checkout/actions/workflows/test.yml/badge.svg)](https://github.com/actions/checkout/actions/workflows/test.yml)
 
-# Checkout V3
+# Checkout V4
 
 This action checks-out your repository under `$GITHUB_WORKSPACE`, so your workflow can access it.
 
-Only a single commit is fetched by default, for the ref/SHA that triggered the workflow. Set `fetch-depth: 0` to fetch all history for all branches and tags. Refer [here](https://help.github.com/en/articles/events-that-trigger-workflows) to learn which commit `$GITHUB_SHA` points to for different events.
+Only a single commit is fetched by default, for the ref/SHA that triggered the workflow. Set `fetch-depth: 0` to fetch all history for all branches and tags. Refer [here](https://docs.github.com/actions/using-workflows/events-that-trigger-workflows) to learn which commit `$GITHUB_SHA` points to for different events.
 
 The auth token is persisted in the local git config. This enables your scripts to run authenticated git commands. The token is removed during post-job cleanup. Set `persist-credentials: false` to opt-out.
 
@@ -12,14 +12,13 @@ When Git 2.18 or higher is not in your PATH, falls back to the REST API to downl
 
 # What's new
 
-- Updated to the node16 runtime by default
-  - This requires a minimum [Actions Runner](https://github.com/actions/runner/releases/tag/v2.285.0) version of v2.285.0 to run, which is by default available in GHES 3.4 or later.
+Please refer to the [release page](https://github.com/actions/checkout/releases/latest) for the latest release notes.
 
 # Usage
 
 <!-- start usage -->
 ```yaml
-- uses: actions/checkout@v3
+- uses: actions/checkout@v4
   with:
     # Repository name with owner. For example, actions/checkout
     # Default: ${{ github.repository }}
@@ -74,10 +73,31 @@ When Git 2.18 or higher is not in your PATH, falls back to the REST API to downl
     # Default: true
     clean: ''
 
+    # Partially clone against a given filter. Overrides sparse-checkout if set.
+    # Default: null
+    filter: ''
+
+    # Do a sparse checkout on given patterns. Each pattern should be separated with
+    # new lines.
+    # Default: null
+    sparse-checkout: ''
+
+    # Specifies whether to use cone-mode when doing a sparse checkout.
+    # Default: true
+    sparse-checkout-cone-mode: ''
+
     # Number of commits to fetch. 0 indicates all history for all branches and tags.
     # Default: 1
     fetch-depth: ''
 
+    # Whether to fetch tags, even if fetch-depth > 0.
+    # Default: false
+    fetch-tags: ''
+
+    # Whether to show progress status output when fetching.
+    # Default: true
+    show-progress: ''
+
     # Whether to download Git-LFS files
     # Default: false
     lfs: ''
@@ -106,6 +126,9 @@ When Git 2.18 or higher is not in your PATH, falls back to the REST API to downl
 
 # Scenarios
 
+- [Fetch only the root files](#Fetch-only-the-root-files)
+- [Fetch only the root files and `.github` and `src` folder](#Fetch-only-the-root-files-and-github-and-src-folder)
+- [Fetch only a single file](#Fetch-only-a-single-file)
 - [Fetch all history for all tags and branches](#Fetch-all-history-for-all-tags-and-branches)
 - [Checkout a different branch](#Checkout-a-different-branch)
 - [Checkout HEAD^](#Checkout-HEAD)
@@ -116,10 +139,38 @@ When Git 2.18 or higher is not in your PATH, falls back to the REST API to downl
 - [Checkout pull request on closed event](#Checkout-pull-request-on-closed-event)
 - [Push a commit using the built-in token](#Push-a-commit-using-the-built-in-token)
 
+## Fetch only the root files
+
+```yaml
+- uses: actions/checkout@v4
+  with:
+    sparse-checkout: .
+```
+
+## Fetch only the root files and `.github` and `src` folder
+
+```yaml
+- uses: actions/checkout@v4
+  with:
+    sparse-checkout: |
+      .github
+      src
+```
+
+## Fetch only a single file
+
+```yaml
+- uses: actions/checkout@v4
+  with:
+    sparse-checkout: |
+      README.md
+    sparse-checkout-cone-mode: false
+```
+
 ## Fetch all history for all tags and branches
 
 ```yaml
-- uses: actions/checkout@v3
+- uses: actions/checkout@v4
   with:
     fetch-depth: 0
 ```
@@ -127,7 +178,7 @@ When Git 2.18 or higher is not in your PATH, falls back to the REST API to downl
 ## Checkout a different branch
 
 ```yaml
-- uses: actions/checkout@v3
+- uses: actions/checkout@v4
   with:
     ref: my-branch
 ```
@@ -135,7 +186,7 @@ When Git 2.18 or higher is not in your PATH, falls back to the REST API to downl
 ## Checkout HEAD^
 
 ```yaml
-- uses: actions/checkout@v3
+- uses: actions/checkout@v4
   with:
     fetch-depth: 2
 - run: git checkout HEAD^
@@ -145,40 +196,42 @@ When Git 2.18 or higher is not in your PATH, falls back to the REST API to downl
 
 ```yaml
 - name: Checkout
-  uses: actions/checkout@v3
+  uses: actions/checkout@v4
   with:
     path: main
 
 - name: Checkout tools repo
-  uses: actions/checkout@v3
+  uses: actions/checkout@v4
   with:
     repository: my-org/my-tools
     path: my-tools
 ```
+> - If your secondary repository is private you will need to add the option noted in [Checkout multiple repos (private)](#Checkout-multiple-repos-private)
 
 ## Checkout multiple repos (nested)
 
 ```yaml
 - name: Checkout
-  uses: actions/checkout@v3
+  uses: actions/checkout@v4
 
 - name: Checkout tools repo
-  uses: actions/checkout@v3
+  uses: actions/checkout@v4
   with:
     repository: my-org/my-tools
     path: my-tools
 ```
+> - If your secondary repository is private you will need to add the option noted in [Checkout multiple repos (private)](#Checkout-multiple-repos-private)
 
 ## Checkout multiple repos (private)
 
 ```yaml
 - name: Checkout
-  uses: actions/checkout@v3
+  uses: actions/checkout@v4
   with:
     path: main
 
 - name: Checkout private tools
-  uses: actions/checkout@v3
+  uses: actions/checkout@v4
   with:
     repository: my-org/my-private-tools
     token: ${{ secrets.GH_PAT }} # `GH_PAT` is a secret that contains your PAT
@@ -191,7 +244,7 @@ When Git 2.18 or higher is not in your PATH, falls back to the REST API to downl
 ## Checkout pull request HEAD commit instead of merge commit
 
 ```yaml
-- uses: actions/checkout@v3
+- uses: actions/checkout@v4
   with:
     ref: ${{ github.event.pull_request.head.sha }}
 ```
@@ -207,7 +260,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 ```
 
 ## Push a commit using the built-in token
@@ -218,7 +271,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - run: |
           date > generated.txt
           git config user.name github-actions

__test__/git-auth-helper.test.ts

@@ -727,6 +727,8 @@ async function setup(testName: string): Promise<void> {
     branchDelete: jest.fn(),
     branchExists: jest.fn(),
     branchList: jest.fn(),
+    sparseCheckout: jest.fn(),
+    sparseCheckoutNonConeMode: jest.fn(),
     checkout: jest.fn(),
     checkoutDetach: jest.fn(),
     config: jest.fn(
@@ -770,6 +772,9 @@ async function setup(testName: string): Promise<void> {
       return ''
     }),
     submoduleSync: jest.fn(),
+    submoduleStatus: jest.fn(async () => {
+      return true
+    }),
     submoduleUpdate: jest.fn(),
     tagExists: jest.fn(),
     tryClean: jest.fn(),
@@ -797,7 +802,12 @@ async function setup(testName: string): Promise<void> {
     authToken: 'some auth token',
     clean: true,
     commit: '',
+    filter: undefined,
+    sparseCheckout: [],
+    sparseCheckoutConeMode: true,
     fetchDepth: 1,
+    fetchTags: false,
+    showProgress: true,
     lfs: false,
     submodules: false,
     nestedSubmodules: false,

__test__/git-command-manager.test.ts

@@ -0,0 +1,378 @@
+import * as exec from '@actions/exec'
+import * as fshelper from '../lib/fs-helper'
+import * as commandManager from '../lib/git-command-manager'
+
+let git: commandManager.IGitCommandManager
+let mockExec = jest.fn()
+
+describe('git-auth-helper tests', () => {
+  beforeAll(async () => {})
+
+  beforeEach(async () => {
+    jest.spyOn(fshelper, 'fileExistsSync').mockImplementation(jest.fn())
+    jest.spyOn(fshelper, 'directoryExistsSync').mockImplementation(jest.fn())
+  })
+
+  afterEach(() => {
+    jest.restoreAllMocks()
+  })
+
+  afterAll(() => {})
+
+  it('branch list matches', async () => {
+    mockExec.mockImplementation((path, args, options) => {
+      console.log(args, options.listeners.stdout)
+
+      if (args.includes('version')) {
+        options.listeners.stdout(Buffer.from('2.18'))
+        return 0
+      }
+
+      if (args.includes('rev-parse')) {
+        options.listeners.stdline(Buffer.from('refs/heads/foo'))
+        options.listeners.stdline(Buffer.from('refs/heads/bar'))
+        return 0
+      }
+
+      return 1
+    })
+    jest.spyOn(exec, 'exec').mockImplementation(mockExec)
+    const workingDirectory = 'test'
+    const lfs = false
+    const doSparseCheckout = false
+    git = await commandManager.createCommandManager(
+      workingDirectory,
+      lfs,
+      doSparseCheckout
+    )
+
+    let branches = await git.branchList(false)
+
+    expect(branches).toHaveLength(2)
+    expect(branches.sort()).toEqual(['foo', 'bar'].sort())
+  })
+
+  it('ambiguous ref name output is captured', async () => {
+    mockExec.mockImplementation((path, args, options) => {
+      console.log(args, options.listeners.stdout)
+
+      if (args.includes('version')) {
+        options.listeners.stdout(Buffer.from('2.18'))
+        return 0
+      }
+
+      if (args.includes('rev-parse')) {
+        options.listeners.stdline(Buffer.from('refs/heads/foo'))
+        // If refs/tags/v1 and refs/heads/tags/v1 existed on this repository
+        options.listeners.errline(
+          Buffer.from("error: refname 'tags/v1' is ambiguous")
+        )
+        return 0
+      }
+
+      return 1
+    })
+    jest.spyOn(exec, 'exec').mockImplementation(mockExec)
+    const workingDirectory = 'test'
+    const lfs = false
+    const doSparseCheckout = false
+    git = await commandManager.createCommandManager(
+      workingDirectory,
+      lfs,
+      doSparseCheckout
+    )
+
+    let branches = await git.branchList(false)
+
+    expect(branches).toHaveLength(1)
+    expect(branches.sort()).toEqual(['foo'].sort())
+  })
+})
+
+describe('Test fetchDepth and fetchTags options', () => {
+  beforeEach(async () => {
+    jest.spyOn(fshelper, 'fileExistsSync').mockImplementation(jest.fn())
+    jest.spyOn(fshelper, 'directoryExistsSync').mockImplementation(jest.fn())
+    mockExec.mockImplementation((path, args, options) => {
+      console.log(args, options.listeners.stdout)
+
+      if (args.includes('version')) {
+        options.listeners.stdout(Buffer.from('2.18'))
+      }
+
+      return 0
+    })
+  })
+
+  afterEach(() => {
+    jest.restoreAllMocks()
+  })
+
+  it('should call execGit with the correct arguments when fetchDepth is 0 and fetchTags is true', async () => {
+    jest.spyOn(exec, 'exec').mockImplementation(mockExec)
+    const workingDirectory = 'test'
+    const lfs = false
+    const doSparseCheckout = false
+    git = await commandManager.createCommandManager(
+      workingDirectory,
+      lfs,
+      doSparseCheckout
+    )
+
+    const refSpec = ['refspec1', 'refspec2']
+    const options = {
+      filter: 'filterValue',
+      fetchDepth: 0,
+      fetchTags: true
+    }
+
+    await git.fetch(refSpec, options)
+
+    expect(mockExec).toHaveBeenCalledWith(
+      expect.any(String),
+      [
+        '-c',
+        'protocol.version=2',
+        'fetch',
+        '--prune',
+        '--no-recurse-submodules',
+        '--filter=filterValue',
+        'origin',
+        'refspec1',
+        'refspec2'
+      ],
+      expect.any(Object)
+    )
+  })
+
+  it('should call execGit with the correct arguments when fetchDepth is 0 and fetchTags is false', async () => {
+    jest.spyOn(exec, 'exec').mockImplementation(mockExec)
+
+    const workingDirectory = 'test'
+    const lfs = false
+    const doSparseCheckout = false
+    git = await commandManager.createCommandManager(
+      workingDirectory,
+      lfs,
+      doSparseCheckout
+    )
+    const refSpec = ['refspec1', 'refspec2']
+    const options = {
+      filter: 'filterValue',
+      fetchDepth: 0,
+      fetchTags: false
+    }
+
+    await git.fetch(refSpec, options)
+
+    expect(mockExec).toHaveBeenCalledWith(
+      expect.any(String),
+      [
+        '-c',
+        'protocol.version=2',
+        'fetch',
+        '--no-tags',
+        '--prune',
+        '--no-recurse-submodules',
+        '--filter=filterValue',
+        'origin',
+        'refspec1',
+        'refspec2'
+      ],
+      expect.any(Object)
+    )
+  })
+
+  it('should call execGit with the correct arguments when fetchDepth is 1 and fetchTags is false', async () => {
+    jest.spyOn(exec, 'exec').mockImplementation(mockExec)
+
+    const workingDirectory = 'test'
+    const lfs = false
+    const doSparseCheckout = false
+    git = await commandManager.createCommandManager(
+      workingDirectory,
+      lfs,
+      doSparseCheckout
+    )
+    const refSpec = ['refspec1', 'refspec2']
+    const options = {
+      filter: 'filterValue',
+      fetchDepth: 1,
+      fetchTags: false
+    }
+
+    await git.fetch(refSpec, options)
+
+    expect(mockExec).toHaveBeenCalledWith(
+      expect.any(String),
+      [
+        '-c',
+        'protocol.version=2',
+        'fetch',
+        '--no-tags',
+        '--prune',
+        '--no-recurse-submodules',
+        '--filter=filterValue',
+        '--depth=1',
+        'origin',
+        'refspec1',
+        'refspec2'
+      ],
+      expect.any(Object)
+    )
+  })
+
+  it('should call execGit with the correct arguments when fetchDepth is 1 and fetchTags is true', async () => {
+    jest.spyOn(exec, 'exec').mockImplementation(mockExec)
+
+    const workingDirectory = 'test'
+    const lfs = false
+    const doSparseCheckout = false
+    git = await commandManager.createCommandManager(
+      workingDirectory,
+      lfs,
+      doSparseCheckout
+    )
+    const refSpec = ['refspec1', 'refspec2']
+    const options = {
+      filter: 'filterValue',
+      fetchDepth: 1,
+      fetchTags: true
+    }
+
+    await git.fetch(refSpec, options)
+
+    expect(mockExec).toHaveBeenCalledWith(
+      expect.any(String),
+      [
+        '-c',
+        'protocol.version=2',
+        'fetch',
+        '--prune',
+        '--no-recurse-submodules',
+        '--filter=filterValue',
+        '--depth=1',
+        'origin',
+        'refspec1',
+        'refspec2'
+      ],
+      expect.any(Object)
+    )
+  })
+
+  it('should call execGit with the correct arguments when showProgress is true', async () => {
+    jest.spyOn(exec, 'exec').mockImplementation(mockExec)
+
+    const workingDirectory = 'test'
+    const lfs = false
+    const doSparseCheckout = false
+    git = await commandManager.createCommandManager(
+      workingDirectory,
+      lfs,
+      doSparseCheckout
+    )
+    const refSpec = ['refspec1', 'refspec2']
+    const options = {
+      filter: 'filterValue',
+      showProgress: true
+    }
+
+    await git.fetch(refSpec, options)
+
+    expect(mockExec).toHaveBeenCalledWith(
+      expect.any(String),
+      [
+        '-c',
+        'protocol.version=2',
+        'fetch',
+        '--no-tags',
+        '--prune',
+        '--no-recurse-submodules',
+        '--progress',
+        '--filter=filterValue',
+        'origin',
+        'refspec1',
+        'refspec2'
+      ],
+      expect.any(Object)
+    )
+  })
+
+  it('should call execGit with the correct arguments when fetchDepth is 42 and showProgress is true', async () => {
+    jest.spyOn(exec, 'exec').mockImplementation(mockExec)
+
+    const workingDirectory = 'test'
+    const lfs = false
+    const doSparseCheckout = false
+    git = await commandManager.createCommandManager(
+      workingDirectory,
+      lfs,
+      doSparseCheckout
+    )
+    const refSpec = ['refspec1', 'refspec2']
+    const options = {
+      filter: 'filterValue',
+      fetchDepth: 42,
+      showProgress: true
+    }
+
+    await git.fetch(refSpec, options)
+
+    expect(mockExec).toHaveBeenCalledWith(
+      expect.any(String),
+      [
+        '-c',
+        'protocol.version=2',
+        'fetch',
+        '--no-tags',
+        '--prune',
+        '--no-recurse-submodules',
+        '--progress',
+        '--filter=filterValue',
+        '--depth=42',
+        'origin',
+        'refspec1',
+        'refspec2'
+      ],
+      expect.any(Object)
+    )
+  })
+
+  it('should call execGit with the correct arguments when fetchTags is true and showProgress is true', async () => {
+    jest.spyOn(exec, 'exec').mockImplementation(mockExec)
+
+    const workingDirectory = 'test'
+    const lfs = false
+    const doSparseCheckout = false
+    git = await commandManager.createCommandManager(
+      workingDirectory,
+      lfs,
+      doSparseCheckout
+    )
+    const refSpec = ['refspec1', 'refspec2']
+    const options = {
+      filter: 'filterValue',
+      fetchTags: true,
+      showProgress: true
+    }
+
+    await git.fetch(refSpec, options)
+
+    expect(mockExec).toHaveBeenCalledWith(
+      expect.any(String),
+      [
+        '-c',
+        'protocol.version=2',
+        'fetch',
+        '--prune',
+        '--no-recurse-submodules',
+        '--progress',
+        '--filter=filterValue',
+        'origin',
+        'refspec1',
+        'refspec2'
+      ],
+      expect.any(Object)
+    )
+  })
+})

__test__/git-directory-helper.test.ts

@@ -281,6 +281,65 @@ describe('git-directory-helper tests', () => {
     expect(git.branchDelete).toHaveBeenCalledWith(false, 'local-branch-2')
   })
 
+  const cleanWhenSubmoduleStatusIsFalse =
+    'cleans when submodule status is false'
+
+  it(cleanWhenSubmoduleStatusIsFalse, async () => {
+    // Arrange
+    await setup(cleanWhenSubmoduleStatusIsFalse)
+    await fs.promises.writeFile(path.join(repositoryPath, 'my-file'), '')
+
+    //mock bad submodule
+
+    const submoduleStatus = git.submoduleStatus as jest.Mock<any, any>
+    submoduleStatus.mockImplementation(async (remote: boolean) => {
+      return false
+    })
+
+    // Act
+    await gitDirectoryHelper.prepareExistingDirectory(
+      git,
+      repositoryPath,
+      repositoryUrl,
+      clean,
+      ref
+    )
+
+    // Assert
+    const files = await fs.promises.readdir(repositoryPath)
+    expect(files).toHaveLength(0)
+    expect(git.tryClean).toHaveBeenCalled()
+  })
+
+  const doesNotCleanWhenSubmoduleStatusIsTrue =
+    'does not clean when submodule status is true'
+
+  it(doesNotCleanWhenSubmoduleStatusIsTrue, async () => {
+    // Arrange
+    await setup(doesNotCleanWhenSubmoduleStatusIsTrue)
+    await fs.promises.writeFile(path.join(repositoryPath, 'my-file'), '')
+
+    const submoduleStatus = git.submoduleStatus as jest.Mock<any, any>
+    submoduleStatus.mockImplementation(async (remote: boolean) => {
+      return true
+    })
+
+    // Act
+    await gitDirectoryHelper.prepareExistingDirectory(
+      git,
+      repositoryPath,
+      repositoryUrl,
+      clean,
+      ref
+    )
+
+    // Assert
+
+    const files = await fs.promises.readdir(repositoryPath)
+    expect(files.sort()).toEqual(['.git', 'my-file'])
+    expect(git.tryClean).toHaveBeenCalled()
+  })
+
   const removesLockFiles = 'removes lock files'
   it(removesLockFiles, async () => {
     // Arrange
@@ -403,6 +462,8 @@ async function setup(testName: string): Promise<void> {
     branchList: jest.fn(async () => {
       return []
     }),
+    sparseCheckout: jest.fn(),
+    sparseCheckoutNonConeMode: jest.fn(),
     checkout: jest.fn(),
     checkoutDetach: jest.fn(),
     config: jest.fn(),
@@ -423,6 +484,9 @@ async function setup(testName: string): Promise<void> {
     submoduleForeach: jest.fn(),
     submoduleSync: jest.fn(),
     submoduleUpdate: jest.fn(),
+    submoduleStatus: jest.fn(async () => {
+      return true
+    }),
     tagExists: jest.fn(),
     tryClean: jest.fn(async () => {
       return true

__test__/input-helper.test.ts

@@ -79,7 +79,12 @@ describe('input-helper tests', () => {
     expect(settings.clean).toBe(true)
     expect(settings.commit).toBeTruthy()
     expect(settings.commit).toBe('1234567890123456789012345678901234567890')
+    expect(settings.filter).toBe(undefined)
+    expect(settings.sparseCheckout).toBe(undefined)
+    expect(settings.sparseCheckoutConeMode).toBe(true)
     expect(settings.fetchDepth).toBe(1)
+    expect(settings.fetchTags).toBe(false)
+    expect(settings.showProgress).toBe(true)
     expect(settings.lfs).toBe(false)
     expect(settings.ref).toBe('refs/heads/some-ref')
     expect(settings.repositoryName).toBe('some-repo')

__test__/verify-fetch-filter.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+
+# Verify .git folder
+if [ ! -d "./fetch-filter/.git" ]; then
+  echo "Expected ./fetch-filter/.git folder to exist"
+  exit 1
+fi
+
+# Verify .git/config contains partialclonefilter
+
+CLONE_FILTER=$(git -C fetch-filter config --local --get remote.origin.partialclonefilter)
+
+if [ "$CLONE_FILTER" != "blob:none" ]; then
+  echo "Expected ./fetch-filter/.git/config to have 'remote.origin.partialclonefilter' set to 'blob:none'"
+  exit 1
+fi

__test__/verify-sparse-checkout-non-cone-mode.sh

@@ -0,0 +1,51 @@
+#!/bin/bash
+
+# Verify .git folder
+if [ ! -d "./sparse-checkout-non-cone-mode/.git" ]; then
+  echo "Expected ./sparse-checkout-non-cone-mode/.git folder to exist"
+  exit 1
+fi
+
+# Verify sparse-checkout (non-cone-mode)
+cd sparse-checkout-non-cone-mode
+
+ENABLED=$(git config --local --get-all core.sparseCheckout)
+
+if [ "$?" != "0" ]; then
+    echo "Failed to verify that sparse-checkout is enabled"
+    exit 1
+fi
+
+# Check that sparse-checkout is enabled
+if [ "$ENABLED" != "true" ]; then
+  echo "Expected sparse-checkout to be enabled (is: $ENABLED)"
+  exit 1
+fi
+
+SPARSE_CHECKOUT_FILE=$(git rev-parse --git-path info/sparse-checkout)
+
+if [ "$?" != "0" ]; then
+    echo "Failed to validate sparse-checkout"
+    exit 1
+fi
+
+# Check that sparse-checkout list is not empty
+if [ ! -f "$SPARSE_CHECKOUT_FILE" ]; then
+  echo "Expected sparse-checkout file to exist"
+  exit 1
+fi
+
+# Check that all folders from sparse-checkout exists
+for pattern in $(cat "$SPARSE_CHECKOUT_FILE")
+do
+  if [ ! -d "${pattern#/}" ]; then
+    echo "Expected directory '${pattern#/}' to exist"
+    exit 1
+  fi
+done
+
+# Verify that the root directory is not checked out
+if [ -f README.md ]; then
+  echo "Expected top-level files not to exist"
+  exit 1
+fi

__test__/verify-sparse-checkout.sh

@@ -0,0 +1,63 @@
+#!/bin/bash
+
+# Verify .git folder
+if [ ! -d "./sparse-checkout/.git" ]; then
+  echo "Expected ./sparse-checkout/.git folder to exist"
+  exit 1
+fi
+
+# Verify sparse-checkout
+cd sparse-checkout
+
+SPARSE=$(git sparse-checkout list)
+
+if [ "$?" != "0" ]; then
+    echo "Failed to validate sparse-checkout"
+    exit 1
+fi
+
+# Check that sparse-checkout list is not empty
+if [ -z "$SPARSE" ]; then
+  echo "Expected sparse-checkout list to not be empty"
+  exit 1
+fi
+
+# Check that all folders of the sparse checkout exist
+for pattern in $SPARSE
+do
+  if [ ! -d "$pattern" ]; then
+    echo "Expected directory '$pattern' to exist"
+    exit 1
+  fi
+done
+
+checkSparse () {
+  if [ ! -d "./$1" ]; then
+    echo "Expected directory '$1' to exist"
+    exit 1
+  fi
+
+  for file in $(git ls-tree -r --name-only HEAD $1)
+  do
+    if [ ! -f "$file" ]; then
+      echo "Expected file '$file' to exist"
+      exit 1
+    fi
+  done
+}
+
+# Check that all folders and their children have been checked out
+checkSparse __test__
+checkSparse .github
+checkSparse dist
+
+# Check that only sparse-checkout folders have been checked out
+for pattern in $(git ls-tree --name-only HEAD)
+do
+  if [ -d "$pattern" ]; then
+    if [[ "$pattern" != "__test__" && "$pattern" != ".github" && "$pattern" != "dist" ]]; then
+      echo "Expected directory '$pattern' to not exist"
+      exit 1
+    fi
+  fi
+done

action.yml

@@ -53,9 +53,29 @@ inputs:
   clean:
     description: 'Whether to execute `git clean -ffdx && git reset --hard HEAD` before fetching'
     default: true
+  filter:
+    description: >
+      Partially clone against a given filter.
+      Overrides sparse-checkout if set.
+    default: null
+  sparse-checkout:
+    description: >
+      Do a sparse checkout on given patterns.
+      Each pattern should be separated with new lines.
+    default: null
+  sparse-checkout-cone-mode:
+    description: >
+      Specifies whether to use cone-mode when doing a sparse checkout.
+    default: true
   fetch-depth:
     description: 'Number of commits to fetch. 0 indicates all history for all branches and tags.'
     default: 1
+  fetch-tags:
+    description: 'Whether to fetch tags, even if fetch-depth > 0.'
+    default: false
+  show-progress:
+    description: 'Whether to show progress status output when fetching.'
+    default: true
   lfs:
     description: 'Whether to download Git-LFS files'
     default: false
@@ -75,6 +95,6 @@ inputs:
     description: The base URL for the GitHub instance that you are trying to clone from, will use environment defaults to fetch from the same instance that the workflow is running from unless specified. Example URLs are https://github.com or https://my-ghes-server.example.com
     required: false
 runs:
-  using: node16
+  using: node20
   main: dist/index.js
   post: dist/index.js

adrs/0153-checkout-v2.md

@@ -181,7 +181,7 @@ GITHUB_WORKSPACE=/home/runner/work/foo/foo
 RUNNER_WORKSPACE=/home/runner/work/foo
 ```
 
-V2 introduces a new contraint on the checkout path. The location must now be under `github.workspace`. Whereas the checkout@v1 constraint was one level up, under `runner.workspace`.
+V2 introduces a new constraint on the checkout path. The location must now be under `github.workspace`. Whereas the checkout@v1 constraint was one level up, under `runner.workspace`.
 
 V2 no longer changes `github.workspace` to follow wherever the self repo is checked-out.
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "checkout",
-  "version": "3.1.0",
+  "version": "4.1.0",
   "description": "checkout action",
   "main": "lib/main.js",
   "scripts": {
@@ -30,21 +30,21 @@
   "dependencies": {
     "@actions/core": "^1.10.0",
     "@actions/exec": "^1.0.1",
-    "@actions/github": "^2.2.0",
-    "@actions/io": "^1.0.1",
+    "@actions/github": "^5.0.0",
+    "@actions/io": "^1.1.3",
     "@actions/tool-cache": "^1.1.2",
-    "stream": "0.0.2",
     "uuid": "^3.3.3"
   },
   "devDependencies": {
     "@types/jest": "^27.0.2",
-    "@types/node": "^12.7.12",
+    "@types/node": "^20.5.3",
     "@types/uuid": "^3.4.6",
-    "@typescript-eslint/parser": "^5.1.0",
-    "@zeit/ncc": "^0.20.5",
+    "@typescript-eslint/eslint-plugin": "^5.45.0",
+    "@typescript-eslint/parser": "^5.45.0",
+    "@vercel/ncc": "^0.36.1",
     "eslint": "^7.32.0",
     "eslint-plugin-github": "^4.3.2",
-    "eslint-plugin-jest": "^25.2.2",
+    "eslint-plugin-jest": "^25.7.0",
     "jest": "^27.3.0",
     "jest-circus": "^27.3.0",
     "js-yaml": "^3.13.1",

src/git-auth-helper.ts

@@ -247,7 +247,7 @@ class GitAuthHelper {
     if (this.settings.sshKnownHosts) {
       knownHosts += `# Begin from input known hosts\n${this.settings.sshKnownHosts}\n# end from input known hosts\n`
     }
-    knownHosts += `# Begin implicitly added github.com\ngithub.com ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAq2A7hRGmdnm9tUDbO9IDSwBK6TbQa+PXYPCPy6rbTrTtw7PHkccKrpp0yVhp5HdEIcKr6pLlVDBfOLX9QUsyCOV0wzfjIJNlGEYsdlLJizHhbn2mUjvSAHQqZETYP81eFzLQNnPHt4EVVUh7VfDESU84KezmD5QlWpXLmvU31/yMf+Se8xhHTvKSCZIFImWwoG6mbUoWf9nzpIoaSjB+weqqUUmpaaasXVal72J+UX2B+2RPW3RcT0eOzQgqlJL3RKrTJvdsjE3JEAvGq3lGHSZXy28G3skua2SmVi/w4yCE6gbODqnTWlg7+wC604ydGXA8VJiS5ap43JXiUFFAaQ==\n# End implicitly added github.com\n`
+    knownHosts += `# Begin implicitly added github.com\ngithub.com ssh-rsa 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\n# End implicitly added github.com\n`
     this.sshKnownHostsPath = path.join(runnerTemp, `${uniqueId}_known_hosts`)
     stateHelper.setSshKnownHostsPath(this.sshKnownHostsPath)
     await fs.promises.writeFile(this.sshKnownHostsPath, knownHosts)

src/git-command-manager.ts

@@ -1,5 +1,6 @@
 import * as core from '@actions/core'
 import * as exec from '@actions/exec'
+import * as fs from 'fs'
 import * as fshelper from './fs-helper'
 import * as io from '@actions/io'
 import * as path from 'path'
@@ -7,7 +8,6 @@ import * as refHelper from './ref-helper'
 import * as regexpHelper from './regexp-helper'
 import * as retryHelper from './retry-helper'
 import {GitVersion} from './git-version'
-import stream, {Writable} from 'stream'
 
 // Auth header not supported before 2.9
 // Wire protocol v2 not supported before 2.18
@@ -17,6 +17,8 @@ export interface IGitCommandManager {
   branchDelete(remote: boolean, branch: string): Promise<void>
   branchExists(remote: boolean, pattern: string): Promise<boolean>
   branchList(remote: boolean): Promise<string[]>
+  sparseCheckout(sparseCheckout: string[]): Promise<void>
+  sparseCheckoutNonConeMode(sparseCheckout: string[]): Promise<void>
   checkout(ref: string, startPoint: string): Promise<void>
   checkoutDetach(): Promise<void>
   config(
@@ -26,7 +28,15 @@ export interface IGitCommandManager {
     add?: boolean
   ): Promise<void>
   configExists(configKey: string, globalConfig?: boolean): Promise<boolean>
-  fetch(refSpec: string[], fetchDepth?: number): Promise<void>
+  fetch(
+    refSpec: string[],
+    options: {
+      filter?: string
+      fetchDepth?: number
+      fetchTags?: boolean
+      showProgress?: boolean
+    }
+  ): Promise<void>
   getDefaultBranch(repositoryUrl: string): Promise<string>
   getWorkingDirectory(): string
   init(): Promise<void>
@@ -42,6 +52,7 @@ export interface IGitCommandManager {
   submoduleForeach(command: string, recursive: boolean): Promise<string>
   submoduleSync(recursive: boolean): Promise<void>
   submoduleUpdate(fetchDepth: number, recursive: boolean): Promise<void>
+  submoduleStatus(): Promise<boolean>
   tagExists(pattern: string): Promise<boolean>
   tryClean(): Promise<boolean>
   tryConfigUnset(configKey: string, globalConfig?: boolean): Promise<boolean>
@@ -52,9 +63,14 @@ export interface IGitCommandManager {
 
 export async function createCommandManager(
   workingDirectory: string,
-  lfs: boolean
+  lfs: boolean,
+  doSparseCheckout: boolean
 ): Promise<IGitCommandManager> {
-  return await GitCommandManager.createCommandManager(workingDirectory, lfs)
+  return await GitCommandManager.createCommandManager(
+    workingDirectory,
+    lfs,
+    doSparseCheckout
+  )
 }
 
 class GitCommandManager {
@@ -64,6 +80,7 @@ class GitCommandManager {
   }
   private gitPath = ''
   private lfs = false
+  private doSparseCheckout = false
   private workingDirectory = ''
 
   // Private constructor; use createCommandManager()
@@ -92,12 +109,14 @@ class GitCommandManager {
 
   async branchList(remote: boolean): Promise<string[]> {
     const result: string[] = []
-    const stderr: string[] = []
 
     // Note, this implementation uses "rev-parse --symbolic-full-name" because the output from
     // "branch --list" is more difficult when in a detached HEAD state.
-    // Note, this implementation uses "rev-parse --symbolic-full-name" because there is a bug
-    // in Git 2.18 that causes "rev-parse --symbolic" to output symbolic full names.
+
+    // TODO(https://github.com/actions/checkout/issues/786): this implementation uses
+    // "rev-parse --symbolic-full-name" because there is a bug
+    // in Git 2.18 that causes "rev-parse --symbolic" to output symbolic full names. When
+    // 2.18 is no longer supported, we can switch back to --symbolic.
 
     const args = ['rev-parse', '--symbolic-full-name']
     if (remote) {
@@ -106,32 +125,73 @@ class GitCommandManager {
       args.push('--branches')
     }
 
+    const stderr: string[] = []
+    const errline: string[] = []
+    const stdout: string[] = []
+    const stdline: string[] = []
+
     const listeners = {
       stderr: (data: Buffer) => {
         stderr.push(data.toString())
       },
-      errline: (line: string) => {
-        stderr.push(line)
+      errline: (data: Buffer) => {
+        errline.push(data.toString())
+      },
+      stdout: (data: Buffer) => {
+        stdout.push(data.toString())
+      },
+      stdline: (data: Buffer) => {
+        stdline.push(data.toString())
       }
     }
-    const output = await this.execGit(args, false, false, listeners)
 
-    for (let branch of output.stdout.trim().split('\n')) {
+    // Suppress the output in order to avoid flooding annotations with innocuous errors.
+    await this.execGit(args, false, true, listeners)
+
+    core.debug(`stderr callback is: ${stderr}`)
+    core.debug(`errline callback is: ${errline}`)
+    core.debug(`stdout callback is: ${stdout}`)
+    core.debug(`stdline callback is: ${stdline}`)
+
+    for (let branch of stdline) {
       branch = branch.trim()
-      if (branch) {
-        if (branch.startsWith('refs/heads/')) {
-          branch = branch.substr('refs/heads/'.length)
-        } else if (branch.startsWith('refs/remotes/')) {
-          branch = branch.substr('refs/remotes/'.length)
-        }
-
-        result.push(branch)
+      if (!branch) {
+        continue
       }
+
+      if (branch.startsWith('refs/heads/')) {
+        branch = branch.substring('refs/heads/'.length)
+      } else if (branch.startsWith('refs/remotes/')) {
+        branch = branch.substring('refs/remotes/'.length)
+      }
+
+      result.push(branch)
     }
-    core.info(stderr.join('\n'))
+
     return result
   }
 
+  async sparseCheckout(sparseCheckout: string[]): Promise<void> {
+    await this.execGit(['sparse-checkout', 'set', ...sparseCheckout])
+  }
+
+  async sparseCheckoutNonConeMode(sparseCheckout: string[]): Promise<void> {
+    await this.execGit(['config', 'core.sparseCheckout', 'true'])
+    const output = await this.execGit([
+      'rev-parse',
+      '--git-path',
+      'info/sparse-checkout'
+    ])
+    const sparseCheckoutPath = path.join(
+      this.workingDirectory,
+      output.stdout.trimRight()
+    )
+    await fs.promises.appendFile(
+      sparseCheckoutPath,
+      `\n${sparseCheckout.join('\n')}\n`
+    )
+  }
+
   async checkout(ref: string, startPoint: string): Promise<void> {
     const args = ['checkout', '--progress', '--force']
     if (startPoint) {
@@ -180,15 +240,31 @@ class GitCommandManager {
     return output.exitCode === 0
   }
 
-  async fetch(refSpec: string[], fetchDepth?: number): Promise<void> {
+  async fetch(
+    refSpec: string[],
+    options: {
+      filter?: string
+      fetchDepth?: number
+      fetchTags?: boolean
+      showProgress?: boolean
+    }
+  ): Promise<void> {
     const args = ['-c', 'protocol.version=2', 'fetch']
-    if (!refSpec.some(x => x === refHelper.tagsRefSpec)) {
+    if (!refSpec.some(x => x === refHelper.tagsRefSpec) && !options.fetchTags) {
       args.push('--no-tags')
     }
 
-    args.push('--prune', '--progress', '--no-recurse-submodules')
-    if (fetchDepth && fetchDepth > 0) {
-      args.push(`--depth=${fetchDepth}`)
+    args.push('--prune', '--no-recurse-submodules')
+    if (options.showProgress) {
+      args.push('--progress')
+    }
+
+    if (options.filter) {
+      args.push(`--filter=${options.filter}`)
+    }
+
+    if (options.fetchDepth && options.fetchDepth > 0) {
+      args.push(`--depth=${options.fetchDepth}`)
     } else if (
       fshelper.fileExistsSync(
         path.join(this.workingDirectory, '.git', 'shallow')
@@ -267,8 +343,8 @@ class GitCommandManager {
   }
 
   async log1(format?: string): Promise<string> {
-    var args = format ? ['log', '-1', format] : ['log', '-1']
-    var silent = format ? false : true
+    const args = format ? ['log', '-1', format] : ['log', '-1']
+    const silent = format ? false : true
     const output = await this.execGit(args, false, silent)
     return output.stdout
   }
@@ -336,6 +412,12 @@ class GitCommandManager {
     await this.execGit(args)
   }
 
+  async submoduleStatus(): Promise<boolean> {
+    const output = await this.execGit(['submodule', 'status'], true)
+    core.debug(output.stdout)
+    return output.exitCode === 0
+  }
+
   async tagExists(pattern: string): Promise<boolean> {
     const output = await this.execGit(['tag', '--list', pattern])
     return !!output.stdout.trim()
@@ -395,10 +477,15 @@ class GitCommandManager {
 
   static async createCommandManager(
     workingDirectory: string,
-    lfs: boolean
+    lfs: boolean,
+    doSparseCheckout: boolean
   ): Promise<GitCommandManager> {
     const result = new GitCommandManager()
-    await result.initializeCommandManager(workingDirectory, lfs)
+    await result.initializeCommandManager(
+      workingDirectory,
+      lfs,
+      doSparseCheckout
+    )
     return result
   }
 
@@ -419,51 +506,37 @@ class GitCommandManager {
     for (const key of Object.keys(this.gitEnv)) {
       env[key] = this.gitEnv[key]
     }
+
     const defaultListener = {
       stdout: (data: Buffer) => {
         stdout.push(data.toString())
       }
     }
-    // const listeners = Object.keys(customListeners) < 0 ? customListeners : {stdout: (data: Buffer) => {
-    //   stdout.push(data.toString())
-    // }}
-    const listenersD = {...customListeners, ...defaultListener}
+
+    const mergedListeners = {...defaultListener, ...customListeners}
+
     const stdout: string[] = []
-    // let temp = ''
-    // let temp2 = ''
     const options = {
       cwd: this.workingDirectory,
       env,
       silent,
       ignoreReturnCode: allowAllExitCodes,
-      listeners: listenersD
-      // ,
-      // errStream: new stream.Writable({
-      //   write(chunk, _, next) {
-      //     temp += chunk.toString()
-      //     next()
-      //   }
-      // }),
-
-      // outStream: new stream.Writable({
-      //   write(chunk, _, next) {
-      //     temp2 += chunk.toString()
-      //     next()
-      //   }
-      // })
+      listeners: mergedListeners
     }
 
     result.exitCode = await exec.exec(`"${this.gitPath}"`, args, options)
     result.stdout = stdout.join('')
-    // core.info(temp.length.toString())
-    // core.info(temp2.length.toString())
-    core.info(result.stdout)
+
+    core.debug(result.exitCode.toString())
+    core.debug(result.stdout)
+
     return result
   }
 
   private async initializeCommandManager(
     workingDirectory: string,
-    lfs: boolean
+    lfs: boolean,
+    doSparseCheckout: boolean
   ): Promise<void> {
     this.workingDirectory = workingDirectory
 
@@ -526,6 +599,16 @@ class GitCommandManager {
       }
     }
 
+    this.doSparseCheckout = doSparseCheckout
+    if (this.doSparseCheckout) {
+      // The `git sparse-checkout` command was introduced in Git v2.25.0
+      const minimumGitSparseCheckoutVersion = new GitVersion('2.25')
+      if (!gitVersion.checkMinimum(minimumGitSparseCheckoutVersion)) {
+        throw new Error(
+          `Minimum Git version required for sparse checkout is ${minimumGitSparseCheckoutVersion}. Your git ('${this.gitPath}') is ${gitVersion}`
+        )
+      }
+    }
     // Set the user agent
     const gitHttpUserAgent = `git/${gitVersion} (github-actions-checkout)`
     core.debug(`Set git useragent to: ${gitHttpUserAgent}`)

src/git-directory-helper.ts

@@ -81,12 +81,18 @@ export async function prepareExistingDirectory(
       }
       core.endGroup()
 
+      // Check for submodules and delete any existing files if submodules are present
+      if (!(await git.submoduleStatus())) {
+        remove = true
+        core.info('Bad Submodules found, removing existing files')
+      }
+
       // Clean
       if (clean) {
         core.startGroup('Cleaning the repository')
         if (!(await git.tryClean())) {
           core.debug(
-            `The clean command failed. This might be caused by: 1) path too long, 2) permission issue, or 3) file in use. For futher investigation, manually run 'git clean -ffdx' on the directory '${repositoryPath}'.`
+            `The clean command failed. This might be caused by: 1) path too long, 2) permission issue, or 3) file in use. For further investigation, manually run 'git clean -ffdx' on the directory '${repositoryPath}'.`
           )
           remove = true
         } else if (!(await git.tryReset())) {

src/git-source-provider.ts

@@ -153,23 +153,38 @@ export async function getSource(settings: IGitSourceSettings): Promise<void> {
 
     // Fetch
     core.startGroup('Fetching the repository')
+    const fetchOptions: {
+      filter?: string
+      fetchDepth?: number
+      fetchTags?: boolean
+      showProgress?: boolean
+    } = {}
+
+    if (settings.filter) {
+      fetchOptions.filter = settings.filter
+    } else if (settings.sparseCheckout) {
+      fetchOptions.filter = 'blob:none'
+    }
+
     if (settings.fetchDepth <= 0) {
       // Fetch all branches and tags
       let refSpec = refHelper.getRefSpecForAllHistory(
         settings.ref,
         settings.commit
       )
-      await git.fetch(refSpec)
+      await git.fetch(refSpec, fetchOptions)
 
       // When all history is fetched, the ref we're interested in may have moved to a different
       // commit (push or force push). If so, fetch again with a targeted refspec.
       if (!(await refHelper.testRef(git, settings.ref, settings.commit))) {
         refSpec = refHelper.getRefSpec(settings.ref, settings.commit)
-        await git.fetch(refSpec)
+        await git.fetch(refSpec, fetchOptions)
       }
     } else {
+      fetchOptions.fetchDepth = settings.fetchDepth
+      fetchOptions.fetchTags = settings.fetchTags
       const refSpec = refHelper.getRefSpec(settings.ref, settings.commit)
-      await git.fetch(refSpec, settings.fetchDepth)
+      await git.fetch(refSpec, fetchOptions)
     }
     core.endGroup()
 
@@ -185,12 +200,24 @@ export async function getSource(settings: IGitSourceSettings): Promise<void> {
     // LFS fetch
     // Explicit lfs-fetch to avoid slow checkout (fetches one lfs object at a time).
     // Explicit lfs fetch will fetch lfs objects in parallel.
-    if (settings.lfs) {
+    // For sparse checkouts, let `checkout` fetch the needed objects lazily.
+    if (settings.lfs && !settings.sparseCheckout) {
       core.startGroup('Fetching LFS objects')
       await git.lfsFetch(checkoutInfo.startPoint || checkoutInfo.ref)
       core.endGroup()
     }
 
+    // Sparse checkout
+    if (settings.sparseCheckout) {
+      core.startGroup('Setting up sparse checkout')
+      if (settings.sparseCheckoutConeMode) {
+        await git.sparseCheckout(settings.sparseCheckout)
+      } else {
+        await git.sparseCheckoutNonConeMode(settings.sparseCheckout)
+      }
+      core.endGroup()
+    }
+
     // Checkout
     core.startGroup('Checking out the ref')
     await git.checkout(checkoutInfo.ref, checkoutInfo.startPoint)
@@ -261,7 +288,11 @@ export async function cleanup(repositoryPath: string): Promise<void> {
 
   let git: IGitCommandManager
   try {
-    git = await gitCommandManager.createCommandManager(repositoryPath, false)
+    git = await gitCommandManager.createCommandManager(
+      repositoryPath,
+      false,
+      false
+    )
   } catch {
     return
   }
@@ -297,7 +328,8 @@ async function getGitCommandManager(
   try {
     return await gitCommandManager.createCommandManager(
       settings.repositoryPath,
-      settings.lfs
+      settings.lfs,
+      settings.sparseCheckout != null
     )
   } catch (err) {
     // Git is required for LFS

src/git-source-settings.ts

@@ -29,11 +29,36 @@ export interface IGitSourceSettings {
    */
   clean: boolean
 
+  /**
+   * The filter determining which objects to include
+   */
+  filter: string | undefined
+
+  /**
+   * The array of folders to make the sparse checkout
+   */
+  sparseCheckout: string[]
+
+  /**
+   * Indicates whether to use cone mode in the sparse checkout (if any)
+   */
+  sparseCheckoutConeMode: boolean
+
   /**
    * The depth when fetching
    */
   fetchDepth: number
 
+  /**
+   * Fetch tags, even if fetchDepth > 0 (default: false)
+   */
+  fetchTags: boolean
+
+  /**
+   * Indicates whether to use the --progress option when fetching
+   */
+  showProgress: boolean
+
   /**
    * Indicates whether to fetch LFS objects
    */

src/github-api-helper.ts

@@ -1,12 +1,13 @@
 import * as assert from 'assert'
 import * as core from '@actions/core'
 import * as fs from 'fs'
+import * as github from '@actions/github'
 import * as io from '@actions/io'
 import * as path from 'path'
 import * as retryHelper from './retry-helper'
 import * as toolCache from '@actions/tool-cache'
 import {default as uuid} from 'uuid/v4'
-import {getOctokit, Octokit} from './octokit-provider'
+import {getServerApiUrl} from './url-helper'
 
 const IS_WINDOWS = process.platform === 'win32'
 
@@ -84,11 +85,13 @@ export async function getDefaultBranch(
 ): Promise<string> {
   return await retryHelper.execute(async () => {
     core.info('Retrieving the default branch name')
-    const octokit = getOctokit(authToken, {baseUrl: baseUrl})
+    const octokit = github.getOctokit(authToken, {
+      baseUrl: getServerApiUrl(baseUrl)
+    })
     let result: string
     try {
       // Get the default branch from the repo info
-      const response = await octokit.repos.get({owner, repo})
+      const response = await octokit.rest.repos.get({owner, repo})
       result = response.data.default_branch
       assert.ok(result, 'default_branch cannot be empty')
     } catch (err) {
@@ -125,19 +128,16 @@ async function downloadArchive(
   commit: string,
   baseUrl?: string
 ): Promise<Buffer> {
-  const octokit = getOctokit(authToken, {baseUrl: baseUrl})
-  const params: Octokit.ReposGetArchiveLinkParams = {
+  const octokit = github.getOctokit(authToken, {
+    baseUrl: getServerApiUrl(baseUrl)
+  })
+  const download = IS_WINDOWS
+    ? octokit.rest.repos.downloadZipballArchive
+    : octokit.rest.repos.downloadTarballArchive
+  const response = await download({
     owner: owner,
     repo: repo,
-    archive_format: IS_WINDOWS ? 'zipball' : 'tarball',
     ref: commit || ref
-  }
-  const response = await octokit.repos.getArchiveLink(params)
-  if (response.status != 200) {
-    throw new Error(
-      `Unexpected response from GitHub API. Status: ${response.status}, Data: ${response.data}`
-    )
-  }
-
-  return Buffer.from(response.data) // response.data is ArrayBuffer
+  })
+  return Buffer.from(response.data as ArrayBuffer) // response.data is ArrayBuffer
 }

src/input-helper.ts

@@ -82,6 +82,25 @@ export async function getInputs(): Promise<IGitSourceSettings> {
   result.clean = (core.getInput('clean') || 'true').toUpperCase() === 'TRUE'
   core.debug(`clean = ${result.clean}`)
 
+  // Filter
+  const filter = core.getInput('filter')
+  if (filter) {
+    result.filter = filter
+  }
+
+  core.debug(`filter = ${result.filter}`)
+
+  // Sparse checkout
+  const sparseCheckout = core.getMultilineInput('sparse-checkout')
+  if (sparseCheckout.length) {
+    result.sparseCheckout = sparseCheckout
+    core.debug(`sparse checkout = ${result.sparseCheckout}`)
+  }
+
+  result.sparseCheckoutConeMode =
+    (core.getInput('sparse-checkout-cone-mode') || 'true').toUpperCase() ===
+    'TRUE'
+
   // Fetch depth
   result.fetchDepth = Math.floor(Number(core.getInput('fetch-depth') || '1'))
   if (isNaN(result.fetchDepth) || result.fetchDepth < 0) {
@@ -89,6 +108,16 @@ export async function getInputs(): Promise<IGitSourceSettings> {
   }
   core.debug(`fetch depth = ${result.fetchDepth}`)
 
+  // Fetch tags
+  result.fetchTags =
+    (core.getInput('fetch-tags') || 'false').toUpperCase() === 'TRUE'
+  core.debug(`fetch tags = ${result.fetchTags}`)
+
+  // Show fetch progress
+  result.showProgress =
+    (core.getInput('show-progress') || 'true').toUpperCase() === 'TRUE'
+  core.debug(`show progress = ${result.showProgress}`)
+
   // LFS
   result.lfs = (core.getInput('lfs') || 'false').toUpperCase() === 'TRUE'
   core.debug(`lfs = ${result.lfs}`)

src/misc/generate-docs.ts

@@ -120,7 +120,7 @@ function updateUsage(
 }
 
 updateUsage(
-  'actions/checkout@v3',
+  'actions/checkout@v4',
   path.join(__dirname, '..', '..', 'action.yml'),
   path.join(__dirname, '..', '..', 'README.md')
 )

src/octokit-provider.ts

@@ -1,23 +0,0 @@
-import * as github from '@actions/github'
-import {Octokit} from '@octokit/rest'
-import {getServerApiUrl} from './url-helper'
-
-// Centralize all Octokit references by re-exporting
-export {Octokit} from '@octokit/rest'
-
-export type OctokitOptions = {
-  baseUrl?: string
-  userAgent?: string
-}
-
-export function getOctokit(authToken: string, opts: OctokitOptions) {
-  const options: Octokit.Options = {
-    baseUrl: getServerApiUrl(opts.baseUrl)
-  }
-
-  if (opts.userAgent) {
-    options.userAgent = opts.userAgent
-  }
-
-  return new github.GitHub(authToken, options)
-}

src/ref-helper.ts

@@ -1,8 +1,7 @@
 import {IGitCommandManager} from './git-command-manager'
 import * as core from '@actions/core'
 import * as github from '@actions/github'
-import {getOctokit} from './octokit-provider'
-import {isGhes} from './url-helper'
+import {getServerApiUrl, isGhes} from './url-helper'
 
 export const tagsRefSpec = '+refs/tags/*:refs/tags/*'
 
@@ -245,15 +244,18 @@ export async function checkCommitInfo(
       core.debug(
         `Expected head sha ${expectedHeadSha}; actual head sha ${actualHeadSha}`
       )
-      const octokit = getOctokit(token, {
-        baseUrl: baseUrl,
+      const octokit = github.getOctokit(token, {
+        baseUrl: getServerApiUrl(baseUrl),
         userAgent: `actions-checkout-tracepoint/1.0 (code=STALE_MERGE;owner=${repositoryOwner};repo=${repositoryName};pr=${fromPayload(
           'number'
         )};run_id=${
           process.env['GITHUB_RUN_ID']
         };expected_head_sha=${expectedHeadSha};actual_head_sha=${actualHeadSha})`
       })
-      await octokit.repos.get({owner: repositoryOwner, repo: repositoryName})
+      await octokit.rest.repos.get({
+        owner: repositoryOwner,
+        repo: repositoryName
+      })
     }
   } catch (err) {
     core.debug(

src/state-helper.ts

@@ -47,7 +47,7 @@ export function setSshKnownHostsPath(sshKnownHostsPath: string) {
 }
 
 /**
- * Save the sef-safe-directory input so the POST action can retrieve the value.
+ * Save the set-safe-directory input so the POST action can retrieve the value.
  */
 export function setSafeDirectory() {
   core.saveState('setSafeDirectory', 'true')