$ git clone -n https://src.fedoraproject.org/rpms/python-glymur.git /var/lib/mock/f42-build-side-1-3586818-46925/root/chroot_tmpdir/scmroot/python-glymur
Cloning into '/var/lib/mock/f42-build-side-1-3586818-46925/root/chroot_tmpdir/scmroot/python-glymur'...
$ git fetch origin 8f422833ce29b84071e1991fc46bbd0ee548449c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-glymur
 * [new ref]         8f422833ce29b84071e1991fc46bbd0ee548449c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8f42283 Update to 0.14.1.post2