$ git clone -n https://src.fedoraproject.org/rpms/highlight.git /var/lib/mock/f45-build-13427-450/root/chroot_tmpdir/scmroot/highlight
Cloning into '/var/lib/mock/f45-build-13427-450/root/chroot_tmpdir/scmroot/highlight'...
$ git fetch origin 429ec57cb46dceca47cba3d0a32ba509e24fefa6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/highlight
 * [new ref]         429ec57cb46dceca47cba3d0a32ba509e24fefa6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 429ec57 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild