Branch to be checked out in the workspace. Default is the remote repository's default branch (typically 'master').

Note that this must be a local branch name like 'master' or 'develop' or a tag name. Remote branch names like 'origin/master' and 'origin/develop' are not supported as the branch argument. SHA-1 hashes are not supported as the branch argument. Remote branch names and SHA-1 hashes are supported by the general purpose checkout step.