$ git clone -n https://src.fedoraproject.org/rpms/ghc-rfc5051.git /var/lib/mock/f31-build-54793-28059/root/chroot_tmpdir/scmroot/ghc-rfc5051
Cloning into '/var/lib/mock/f31-build-54793-28059/root/chroot_tmpdir/scmroot/ghc-rfc5051'...
$ git reset --hard 53a677250c6eb39bf607ad0f10d1d3f5bc6cc282
HEAD is now at 53a6772 update to 0.1.0.4