Hole in One in wrong hole?

Because of the conditions my course decided to have two holes on each green, with only 1 flag. Never seen this kind of thing before.

What happens if you tee off and the ball lands in the other hole for an ace? Sure I know you can't class it as hole in one because technically you weren't aiming for that hole. Is it an unofficial one? A freak of nature? Also do you take it out, move it a club head width away without losing a stroke? What's the rule on this kind of thing?