This is useful to ensure that no branch alias is "behind" the most recent tag on the given branch for the alias.

Add to your composer.json in the require-dev section:

"phpcq/branch-alias-validation": "~1.0"

Call the binary:

./vendor/bin/validate-branch-alias.php

Optionally pass the root of the git repository to check:

./vendor/bin/validate-branch-alias.php /path/to/some/git/repository