$ git clone -n https://src.fedoraproject.org/rpms/ghc-data-memocombinators.git /var/lib/mock/f31-build-54267-27982/root/thebuilddir/tmp/scmroot/ghc-data-memocombinators
Cloning into '/var/lib/mock/f31-build-54267-27982/root/thebuilddir/tmp/scmroot/ghc-data-memocombinators'...
$ git reset --hard d7df655183bd61395ddb5917085b2ff027571e53
HEAD is now at d7df655 refresh to cabal-rpm-0.13