$ git clone -n https://src.fedoraproject.org/rpms/qt6-qt3d.git /var/lib/mock/f38-build-side-42-init-devel-835194-28386/root/chroot_tmpdir/scmroot/qt6-qt3d
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-835194-28386/root/chroot_tmpdir/scmroot/qt6-qt3d'...
$ git fetch origin fdb2b396081aeb60bdb4ef22e5ce5b7ce8786f05:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt6-qt3d
 * [new ref]         fdb2b396081aeb60bdb4ef22e5ce5b7ce8786f05 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fdb2b39 6.4.3