class Pronto::Gitlab

def position_sha
  # Better to get those informations from Gitlab API directly than trying to look for them here.
  # (FYI you can't use `pull` method because index api does not contains those informations)
  @position_sha ||= begin
                      data = client.merge_request(slug, pull_id)
                      data.diff_refs.to_h
                    end
end