git check-ref-format

Check if a reference name is acceptable, and exit with a non-zero status if it is not. More information: https://git-scm.com/docs/git-check-ref-format.

• Check the format of the specified reference name:

git check-ref-format refs/head/refname

• Print the name of the last branch checked out:

git check-ref-format --branch @{-1}

• Normalize a refname:

git check-ref-format --normalize refs/head/refname