$ git clone -n https://src.fedoraproject.org/rpms/python-jsonpickle.git /var/lib/mock/f41-build-1140053-20930/root/chroot_tmpdir/scmroot/python-jsonpickle
Cloning into '/var/lib/mock/f41-build-1140053-20930/root/chroot_tmpdir/scmroot/python-jsonpickle'...
$ git fetch origin 63e73d4f79671af39a93bd0c66fe3715ecfeb76a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-jsonpickle
 * [new ref]         63e73d4f79671af39a93bd0c66fe3715ecfeb76a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 63e73d4 3.2.2