$ git clone -n https://src.fedoraproject.org/rpms/ghc-RSA.git /var/lib/mock/f31-build-53937-27924/root/thebuilddir/tmp/scmroot/ghc-RSA
Cloning into '/var/lib/mock/f31-build-53937-27924/root/thebuilddir/tmp/scmroot/ghc-RSA'...
$ git reset --hard fe3f471814156b4e5d8c63a945c76e048b006305
HEAD is now at fe3f471 refresh to cabal-rpm-0.13