$ git clone -n https://src.fedoraproject.org/rpms/liblouis.git /var/lib/mock/f40-build-2604940-63426/root/chroot_tmpdir/scmroot/liblouis
Cloning into '/var/lib/mock/f40-build-2604940-63426/root/chroot_tmpdir/scmroot/liblouis'...
$ git fetch origin fb550a67260b0a7e780459aa1df31549b80147b1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/liblouis
 * [new ref]         fb550a67260b0a7e780459aa1df31549b80147b1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fb550a6 Hardlink, rather than symlink, duplicate table files