$ git clone -n https://src.fedoraproject.org/rpms/jackson-bom.git /var/lib/mock/f39-build-2014507-45963/root/chroot_tmpdir/scmroot/jackson-bom
Cloning into '/var/lib/mock/f39-build-2014507-45963/root/chroot_tmpdir/scmroot/jackson-bom'...
$ git fetch origin 3fdb2470b10bbdc5aaa877c98ef9b5995b93233c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/jackson-bom
 * [new ref]         3fdb2470b10bbdc5aaa877c98ef9b5995b93233c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3fdb247 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild