$ git clone -n https://src.fedoraproject.org/rpms/dlrn.git /var/lib/mock/f39-build-1572429-37786/root/chroot_tmpdir/scmroot/dlrn
Cloning into '/var/lib/mock/f39-build-1572429-37786/root/chroot_tmpdir/scmroot/dlrn'...
$ git fetch origin b87daf36f7eae7f7f1653c3ad71332c268ced1fd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dlrn
 * [new ref]         b87daf36f7eae7f7f1653c3ad71332c268ced1fd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b87daf3 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild