tldr/pages/common/git-check-ref-format.md

git check-ref-format

Check if a given refname 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 refname:

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}}