$ git clone -n https://src.fedoraproject.org/rpms/ghc-natural-transformation.git /var/lib/mock/f31-build-112064-34244/root/chroot_tmpdir/scmroot/ghc-natural-transformation
Cloning into '/var/lib/mock/f31-build-112064-34244/root/chroot_tmpdir/scmroot/ghc-natural-transformation'...
$ git reset --hard 87138c881e12caeb79522429db426244a78e6970
HEAD is now at 87138c8 BR prof for lib and static for executable