$ git clone -n https://src.fedoraproject.org/rpms/ghc-statistics.git /var/lib/mock/f40-build-770231-125823/root/chroot_tmpdir/scmroot/ghc-statistics
Cloning into '/var/lib/mock/f40-build-770231-125823/root/chroot_tmpdir/scmroot/ghc-statistics'...
$ git fetch origin 6994f876d9d544e7f28bcdfc3081e39b8caa8585:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-statistics
 * [new ref]         6994f876d9d544e7f28bcdfc3081e39b8caa8585 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6994f87 update to 0.16.2.0