$ git clone -n https://src.fedoraproject.org/rpms/module-build-service.git /var/lib/mock/f39-build-1702482-41213/root/chroot_tmpdir/scmroot/module-build-service
Cloning into '/var/lib/mock/f39-build-1702482-41213/root/chroot_tmpdir/scmroot/module-build-service'...
$ git fetch origin acc32591df28f41ae144b717a4ad51081cdfff6a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/module-build-service
 * [new ref]         acc32591df28f41ae144b717a4ad51081cdfff6a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at acc3259 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild