$ git clone -n https://src.fedoraproject.org/rpms/gitjacker.git /var/lib/mock/f38-build-side-42-init-devel-720184-27296/root/chroot_tmpdir/scmroot/gitjacker
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-720184-27296/root/chroot_tmpdir/scmroot/gitjacker'...
$ git fetch origin dda92e5302604532b89dcbd9b289ba61c6d9c532:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gitjacker
 * [new ref]         dda92e5302604532b89dcbd9b289ba61c6d9c532 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dda92e5 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild