$ git clone -n https://src.fedoraproject.org/rpms/gtk+.git /var/lib/mock/f40-build-792047-138073/root/chroot_tmpdir/scmroot/gtk+
Cloning into '/var/lib/mock/f40-build-792047-138073/root/chroot_tmpdir/scmroot/gtk+'...
$ git fetch origin 30a6c3fb5102dca3fe2e839bbd5558328eb4f723:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gtk+
 * [new ref]         30a6c3fb5102dca3fe2e839bbd5558328eb4f723 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 30a6c3f Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild