$ git clone -n https://src.fedoraproject.org/rpms/qpwgraph.git /var/lib/mock/f41-build-859027-168524/root/chroot_tmpdir/scmroot/qpwgraph
Cloning into '/var/lib/mock/f41-build-859027-168524/root/chroot_tmpdir/scmroot/qpwgraph'...
$ git fetch origin 8af017616a142e4ef3387eba1e130063936dba6e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qpwgraph
 * [new ref]         8af017616a142e4ef3387eba1e130063936dba6e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8af0176 Update to 0.7.8