$ git clone -n https://src.fedoraproject.org/rpms/highfive.git /var/lib/mock/f41-build-831501-157008/root/chroot_tmpdir/scmroot/highfive
Cloning into '/var/lib/mock/f41-build-831501-157008/root/chroot_tmpdir/scmroot/highfive'...
$ git fetch origin 256c45a1ebbedf852101a493834e75ac1fbb77f7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/highfive
 * [new ref]         256c45a1ebbedf852101a493834e75ac1fbb77f7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 256c45a Update to 2.10.0 upstream release