$ git clone -n https://src.fedoraproject.org/rpms/freefem++.git /var/lib/mock/f40-build-2484051-61639/root/chroot_tmpdir/scmroot/freefem++
Cloning into '/var/lib/mock/f40-build-2484051-61639/root/chroot_tmpdir/scmroot/freefem++'...
$ git fetch origin c73dcaf05b301cc7886dd8689ccd28ab67661155:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/freefem++
 * [new ref]         c73dcaf05b301cc7886dd8689ccd28ab67661155 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c73dcaf Rebuild for coin-or-Ipopt 3.14.14