$ git clone -n https://src.fedoraproject.org/rpms/ghc-union-find.git /var/lib/mock/f31-build-101353-33382/root/chroot_tmpdir/scmroot/ghc-union-find
Cloning into '/var/lib/mock/f31-build-101353-33382/root/chroot_tmpdir/scmroot/ghc-union-find'...
$ git reset --hard f52aa18170409775cd310eb13364e2712e6c9ce2
HEAD is now at f52aa18 BR prof for lib and static for executable