$ git clone -n https://src.fedoraproject.org/rpms/librepository.git /var/lib/mock/f39-build-1531571-36214/root/chroot_tmpdir/scmroot/librepository
Cloning into '/var/lib/mock/f39-build-1531571-36214/root/chroot_tmpdir/scmroot/librepository'...
$ git fetch origin df3f7e85df567c7d6fdbadb98d98340bef10e3da:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/librepository
 * [new ref]         df3f7e85df567c7d6fdbadb98d98340bef10e3da -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at df3f7e8 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild