$ git clone -n https://src.fedoraproject.org/rpms/ghc-Stream.git /var/lib/mock/f31-build-53948-27926/root/chroot_tmpdir/scmroot/ghc-Stream
Cloning into '/var/lib/mock/f31-build-53948-27926/root/chroot_tmpdir/scmroot/ghc-Stream'...
$ git reset --hard 6cb134a6dde6a6e59456e993deb4a40adc289ac3
HEAD is now at 6cb134a refresh to cabal-rpm-0.13