$ git clone -n https://src.fedoraproject.org/rpms/ghc-hashtables.git /var/lib/mock/f31-build-54431-28001/root/chroot_tmpdir/scmroot/ghc-hashtables
Cloning into '/var/lib/mock/f31-build-54431-28001/root/chroot_tmpdir/scmroot/ghc-hashtables'...
$ git reset --hard 2711cf20d800976ffd7b980ffe83a05c00f4ef39
HEAD is now at 2711cf2 refresh to cabal-rpm-0.13