$ git clone -n https://src.fedoraproject.org/rpms/kf6-kauth.git /var/lib/mock/f42-build-side-1-3499880-45966/root/chroot_tmpdir/scmroot/kf6-kauth
Cloning into '/var/lib/mock/f42-build-side-1-3499880-45966/root/chroot_tmpdir/scmroot/kf6-kauth'...
$ git fetch origin 4826940713d5fb147e3d3cd67715aca95ab9e6e9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-kauth
 * [new ref]         4826940713d5fb147e3d3cd67715aca95ab9e6e9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4826940 6.13.0