$ git clone -n https://src.fedoraproject.org/rpms/ghc-union-find.git /var/lib/mock/f31-build-55030-28081/root/chroot_tmpdir/scmroot/ghc-union-find
Cloning into '/var/lib/mock/f31-build-55030-28081/root/chroot_tmpdir/scmroot/ghc-union-find'...
$ git reset --hard df681766f846cc8cbfa01feac624a376c5f87eb9
HEAD is now at df68176 refresh to cabal-rpm-0.13