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

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# 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}}`