$ git clone -n https://src.fedoraproject.org/rpms/kiwi.git /var/lib/mock/f42-build-868569-176162/root/chroot_tmpdir/scmroot/kiwi
Cloning into '/var/lib/mock/f42-build-868569-176162/root/chroot_tmpdir/scmroot/kiwi'...
$ git fetch origin fdf4390ffa136205367473269571aa96bb20d348:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kiwi
 * [new ref]         fdf4390ffa136205367473269571aa96bb20d348 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fdf4390 Update to 10.2.9