$ git clone -n https://src.fedoraproject.org/rpms/liblouisutdml.git /var/lib/mock/f40-build-2672558-67522/root/chroot_tmpdir/scmroot/liblouisutdml
Cloning into '/var/lib/mock/f40-build-2672558-67522/root/chroot_tmpdir/scmroot/liblouisutdml'...
$ git fetch origin 4c26559abd556bb0bab345fc85267787a97d62bf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/liblouisutdml
 * [new ref]         4c26559abd556bb0bab345fc85267787a97d62bf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4c26559 added missing source tarball