$ git clone -n https://src.fedoraproject.org/rpms/ghc-mwc-random.git /var/lib/mock/f31-build-54672-28032/root/chroot_tmpdir/scmroot/ghc-mwc-random
Cloning into '/var/lib/mock/f31-build-54672-28032/root/chroot_tmpdir/scmroot/ghc-mwc-random'...
$ git reset --hard 6e3b5423b519edbc9c59a35b5c91bf65dd5bf3f9
HEAD is now at 6e3b542 refresh to cabal-rpm-0.13