$ git clone -n https://src.fedoraproject.org/rpms/kiwi.git /var/lib/mock/f40-build-867589-170426/root/chroot_tmpdir/scmroot/kiwi
Cloning into '/var/lib/mock/f40-build-867589-170426/root/chroot_tmpdir/scmroot/kiwi'...
$ git fetch origin 1bba724d9cc2618f237e5d8018e78fabc472720c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kiwi
 * [new ref]         1bba724d9cc2618f237e5d8018e78fabc472720c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1bba724 Update to 10.2.4