The README says the default `branch` is the one executing the action, but it's actually [master](https://github.com/commitizen-tools/commitizen-action/blob/bed4ffbccaa55d3326a85784a6df21611005b94b/action.yml#L41). [This](https://github.com/commitizen-tools/commitizen-action/blob/bed4ffbccaa55d3326a85784a6df21611005b94b/entrypoint.sh#L10-L11) is effectively a no-op currently.