How to get the target branch of the GitHub pull request from an Actions?

Question

When an action is set on pull_request in Github Actions, how to get the target branch? The use case is to retrieve the PR- (and hopefully, branch)-specific comm

Answer 1

You can access the target branch with ${{ github.event.pull_request.base.ref }}.

To know the full list of properties of the github.event object, try to run more $GITHUB_EVENT_PATH.