$ git clone -n https://src.fedoraproject.org/rpms/ghc-transformers-base.git /var/lib/mock/f33-build-140330-42481/root/chroot_tmpdir/scmroot/ghc-transformers-base
Cloning into '/var/lib/mock/f33-build-140330-42481/root/chroot_tmpdir/scmroot/ghc-transformers-base'...
$ git reset --hard 30d6b20edd79d6fbce072df7d48c4e176cfb5940
HEAD is now at 30d6b20 refresh to cabal-rpm-2.0.2