Either they don't care or they see it and figure I must be some sort of whiz. I say that because the amount of people that don't know how git works or that file attributes are arbitrarily changeable is amazing.
And no not specifically to "cheat". Just on principle. If they require BS I give them BS. Else it's just fun. Sometimes the people actually hiring/doing the interview are also not the ones that care for this but HR/senior leadership only.