It appears that Jason Momoa has already completed his part in the Justice League reshoots.
After all, it was reported earlier today that the Batmobile had been spotted heading to the Justice League set, which could coincide with the studio filming additional scenes in Gotham.
Furthermore, eagle-eyed viewers have spotted sets that indicate possible Wonder Woman flashbacks, though neither of these reports has been confirmed.
Further dispelling rumors of the studio ordering extensive reshoots, Jason Momoa appears to have already completed filming his scenes as Arthur Curry, aka Aquaman, for the upcoming movie, just slightly over one week after additional photography began.