A pump fake wouldn’t apply on the first of two shots.
There aren't different sets of violations for the first, second, or third FT attempt. It doesn't matter what shot attempt it is according to the rules. Once the FT shooter is in a shooting motion he has to finish it or it is a violation on the shooter. This is a pretty basic rule that is enforced at virtually all levels.
I've literally never seen a FT attempt like that without a whistle being blown. Even if the refs blow it dead and give the shooter a redo, a whistle is blown there every single time. Except for this game apparently.