$ git clone -n https://src.fedoraproject.org/rpms/python-zeroconf.git /var/lib/mock/f40-build-734982-106140/root/chroot_tmpdir/scmroot/python-zeroconf
Cloning into '/var/lib/mock/f40-build-734982-106140/root/chroot_tmpdir/scmroot/python-zeroconf'...
$ git fetch origin 4b20c38625ebac28f51432913c88c42284a7671e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-zeroconf
 * [new ref]         4b20c38625ebac28f51432913c88c42284a7671e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4b20c38 Compile the optional Python extension modules