$ git clone -n https://src.fedoraproject.org/rpms/python-matplotlib.git /var/lib/mock/f41-build-762784-13458/root/chroot_tmpdir/scmroot/python-matplotlib
Cloning into '/var/lib/mock/f41-build-762784-13458/root/chroot_tmpdir/scmroot/python-matplotlib'...
$ git fetch origin 51c7ba15fe09b3055f1257f61c18765bdd5f09fd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-matplotlib
 * [new ref]         51c7ba15fe09b3055f1257f61c18765bdd5f09fd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 51c7ba1 Move IPython to html dependencies