$ git clone -n https://src.fedoraproject.org/rpms/kiwi.git /var/lib/mock/f41-build-861827-170418/root/chroot_tmpdir/scmroot/kiwi
Cloning into '/var/lib/mock/f41-build-861827-170418/root/chroot_tmpdir/scmroot/kiwi'...
$ git fetch origin e6a0d11a0465296274ee7387e4966deef5d2a7f7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kiwi
 * [new ref]         e6a0d11a0465296274ee7387e4966deef5d2a7f7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e6a0d11 Update to 10.2.3