I suppose one could enter it as both a Clone and a DIPA, but unless it was the best clone and the best DIPA it would not be assured of a medal.
For a "clone" judge panel they would probably want to have a smartphone and google at their fingertips in case they ran into a clone they had never tasted. I remember way back in the day with my De Dolle Oerbier clone having to write out a description for the judge panel.