What it might take is someone else other than the USA going up to the same vicinity of the moon. Maybe the Chinese will do it and be able to see the American flag and the astronauts’ footsteps up there.
Oh wait, the Chinese “moon mission” will be faked also. Right, how silly of me.
Not if they were smart. They could fake the landing, fake the finding of the footprints, and fake the replacement of the US flag with their flag. What would the US fakers do then?? Call them on it?