$ git clone -n https://src.fedoraproject.org/rpms/python-pg8000.git /var/lib/mock/f40-build-2639436-66359/root/chroot_tmpdir/scmroot/python-pg8000
Cloning into '/var/lib/mock/f40-build-2639436-66359/root/chroot_tmpdir/scmroot/python-pg8000'...
$ git fetch origin 87197a5a3051687b3fc7492727908d7e5a559fdb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-pg8000
 * [new ref]         87197a5a3051687b3fc7492727908d7e5a559fdb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 87197a5 Update to latest upstream release 1.30.4