They will discover some esoteric section of the Laws of the Game that nobody knew existed - it will be applied to us and then forgotten about, never to be applied again.
"Let's go to Peter Walton to figure this one out. Peter?"
"Yes, thanks Peter, so it is unusual but it is the correct decision. Haaland's goal is disallowed because goals scored by a Norwegian on the fifth Sunday of October, while the moon is in a phase of Waning Gibbous, only stand if the goalscorer then correctly cites the Christian prayer of Agnus Dei."
"Thank you, Peter. So there we go, by the letter of the law it appears the correct conclusion has been reached."