action.yml

name: "Wait for ref to be available"
description: "If using github as a mirror, this action will pause until the requested reference is available"
inputs:
  repository:
    description: 'Repository name with owner. For example, actions/checkout'
    default: ${{ github.repository }}
  fetch-depth:
    description: 'Number of commits to fetch. 0 indicates all history for all branches and tags.'
    default: 2
  gerrit-ref:
    description: >
      Reference in the form of refs/changes/0000/00
  ref:
    description: >
      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.
    required: false
    default: ${{ github.sha }}
  token:
    default: ${{ github.token }}
runs:
  using: composite
  steps:
    - uses: actions/checkout@v4
      with:
        repository: ${{ inputs.repository }}
        fetch-depth: ${{ inputs.fetch-depth }}
        token: ${{ inputs.token }}
        ref: ${{ inputs.ref }}
    - id: gerrit-checkout
      shell: bash
      run: |
        until git fetch origin ${{ inputs.gerrit-ref }}; do
          sleep 10
        done
        git checkout FETCH_HEAD