$ git clone -n https://src.fedoraproject.org/rpms/ghc-data-default-class.git /var/lib/mock/f31-build-111188-34132/root/chroot_tmpdir/scmroot/ghc-data-default-class
Cloning into '/var/lib/mock/f31-build-111188-34132/root/chroot_tmpdir/scmroot/ghc-data-default-class'...
$ git reset --hard 6d760f639523762726791a9a4e8ffe362bc0975b
HEAD is now at 6d760f6 BR prof for lib and static for executable