$ git clone -n https://src.fedoraproject.org/rpms/bacula.git /var/lib/mock/f39-build-1496995-34583/root/chroot_tmpdir/scmroot/bacula
Cloning into '/var/lib/mock/f39-build-1496995-34583/root/chroot_tmpdir/scmroot/bacula'...
$ git fetch origin aacae8f6e1e5c785a095c506065b02efb2594318:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bacula
 * [new ref]         aacae8f6e1e5c785a095c506065b02efb2594318 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at aacae8f Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild