Get the source branch of a tag on GitHub Actions-CodePudding

I am now designing the CICD pipeline and planned to trigger by tag and the source branch name would be needed as input.

The ${{ github.ref_name }} shows the source branch when it is a commit, but it shows the tag name when it is a tag creation. I know a tag is from a specific commit, and a commit is from a branch. I am wondering if there's any way to retrieve the source branch from tag directly, or commit from a tag then source branch from that commit.

Thanks.

CodePudding user response：

Not with any env variable from GitHub, since the tag is only given and points to a commit, not a branch. You could look at the solutions given here: Identifying a tag belongs to which branch in git

CodePudding user response：

Finally I use this way to fetch the branch name.

run: |
  raw=$(git branch -r --contains ${{ github.ref }})
  branch=$(echo ${raw##*/} | tr [:upper:] [:lower:])
  echo "branch=$branch" >> $GITHUB_OUTPUT
  echo "Branch is $branch."