- uses: actions/checkout@v2-beta
  with:
    # Repository name with owner. For example, actions/checkout
    # Default: ${{ github.repository }}
    repository: ''

    # 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, defaults to `master`.
    ref: ''

    # Access token for clone repository
    # Default: ${{ github.token }}
    token: ''

    # Relative path under $GITHUB_WORKSPACE to place the repository
    path: ''

    # Whether to execute `git clean -ffdx && git reset --hard HEAD` before fetching
    # Default: true
    clean: ''

    # Number of commits to fetch. 0 indicates all history.
    # Default: 1
    fetch-depth: ''

    # Whether to download Git-LFS files
    # Default: false
    lfs: ''

    # Whether to silent failure
    # Default: false
    silentFailure: ''

- uses: actions/checkout@v2-beta
  with:
    ref: some-branch

- uses: actions/checkout@v2-beta
  with:
    repository: myAccount/myRepository
    ref: refs/heads/master
    token: ${{ secrets.GitHub_PAT }} # `GitHub_PAT` is a secret that contains your PAT

- uses: actions/checkout@v2-beta
  with:
    ref: ${{ github.event.pull_request.head.sha }}