$ git clone -n https://src.fedoraproject.org/rpms/igraph.git /var/lib/mock/f41-build-815558-149588/root/chroot_tmpdir/scmroot/igraph
Cloning into '/var/lib/mock/f41-build-815558-149588/root/chroot_tmpdir/scmroot/igraph'...
$ git fetch origin 483d219392370bfa0d0de52ade13c219532bdd30:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/igraph
 * [new ref]         483d219392370bfa0d0de52ade13c219532bdd30 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 483d219 0.10.13