message: fix: release-pr workflow use pull_request.head.ref
diff: @@ -14,7 +14,7 @@ jobs:
  - name: Checkout
  uses: actions/checkout@v2
  with:
  - ref: ${{ github.event.pull_request.base.ref }}
  + ref: ${{ github.event.pull_request.head.ref }}
  - name: Commenter Is Publisher?
  run: |
  @@ -84,7 +84,7 @@ jobs:
  - name: Checkout
  uses: actions/checkout@v2
  with:
  - ref: ${{ github.event.pull_request.base.ref }}
  + ref: ${{ github.event.pull_request.head.ref }}
  - name: Set env.BOT to Build Bot's Username
  run: echo BOT=polywrap-build-bot >> $GITHUB_ENV
  @@ -143,7 +143,7 @@ jobs:
  token: ${{ secrets.POLYWRAP_BUILD_BOT_PAT }}
  push-to-fork: ${{env.BOT}}/${{github.event.repository.name}}
  branch: release/${{env.RELEASE_VERSION}}
  - base: ${{ github.event.pull_request.base.ref }}
  + base: ${{ github.event.pull_request.head.ref }}
  committer: GitHub <noreply@github.com>
  author: ${{env.BOT}} <${{env.BOT}}@users.noreply.github.com>
  commit-message: "${{env.RELEASE_VERSION}}"
  