$ git clone -n https://src.fedoraproject.org/rpms/kf6-kimageformats.git /var/lib/mock/f42-build-side-1-3511711-46059/root/chroot_tmpdir/scmroot/kf6-kimageformats
Cloning into '/var/lib/mock/f42-build-side-1-3511711-46059/root/chroot_tmpdir/scmroot/kf6-kimageformats'...
$ git fetch origin ebb7038d898abbd11272c47ba2cb105f6fbc483f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-kimageformats
 * [new ref]         ebb7038d898abbd11272c47ba2cb105f6fbc483f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ebb7038 6.13.0