$ git clone -n https://src.fedoraproject.org/rpms/gtengine.git /var/lib/mock/f38-build-712032-94150/root/chroot_tmpdir/scmroot/gtengine
Cloning into '/var/lib/mock/f38-build-712032-94150/root/chroot_tmpdir/scmroot/gtengine'...
$ git fetch origin a83152bc69e3a2872454d3e1275d7ed104644a5c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gtengine
 * [new ref]         a83152bc69e3a2872454d3e1275d7ed104644a5c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a83152b Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild