$ git clone -n https://src.fedoraproject.org/rpms/ghc-optional-args.git /var/lib/mock/f31-build-54693-28036/root/chroot_tmpdir/scmroot/ghc-optional-args
Cloning into '/var/lib/mock/f31-build-54693-28036/root/chroot_tmpdir/scmroot/ghc-optional-args'...
$ git reset --hard f65b9a3b59c5afd647c9b7029289d3f3a71f2d37
HEAD is now at f65b9a3 refresh to cabal-rpm-0.13