Merge 46ff26ce43 into 72f2cec99f

README.md

@@ -29,6 +29,7 @@ When Git 2.18 or higher is not in your PATH, falls back to the REST API to downl
     # The branch, tag or SHA to checkout. When checking out the repository that
     # triggered a workflow, this defaults to the reference or SHA for that event.
     # Otherwise, uses the default branch.
+    # Default: ${{ github.ref }}
     ref: ''
 
     # Personal access token (PAT) used to fetch the repository. The PAT is configured