$ git clone -n https://src.fedoraproject.org/rpms/kf6-kpackage.git /var/lib/mock/f41-build-858692-168467/root/chroot_tmpdir/scmroot/kf6-kpackage
Cloning into '/var/lib/mock/f41-build-858692-168467/root/chroot_tmpdir/scmroot/kf6-kpackage'...
$ git fetch origin ab280ee6d4ff5a3daa0200a05c1760bb6f02cc19:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-kpackage
 * [new ref]         ab280ee6d4ff5a3daa0200a05c1760bb6f02cc19 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ab280ee 6.7.0