$ git clone -n https://src.fedoraproject.org/rpms/ghc-data-clist.git /var/lib/mock/f41-build-838892-159867/root/chroot_tmpdir/scmroot/ghc-data-clist
Cloning into '/var/lib/mock/f41-build-838892-159867/root/chroot_tmpdir/scmroot/ghc-data-clist'...
$ git fetch origin 1e8e084d7e8f4b29e64d3803dedc56b6d545459c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-data-clist
 * [new ref]         1e8e084d7e8f4b29e64d3803dedc56b6d545459c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1e8e084 revise .cabal file