$ git clone -n https://src.fedoraproject.org/rpms/python-zmq.git /var/lib/mock/f45-build-33758-674/root/chroot_tmpdir/scmroot/python-zmq
Cloning into '/var/lib/mock/f45-build-33758-674/root/chroot_tmpdir/scmroot/python-zmq'...
$ git fetch origin f576c1e6bbe9a8d1eb565283097ae235f4eea113:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-zmq
 * [new ref]         f576c1e6bbe9a8d1eb565283097ae235f4eea113 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f576c1e Update to 27.2.0 upstream release