NCAA shot clock question

[rulesmaven]

Imagine 38 seconds left in the half at start of possession for team A. Just before the shot clock expires, A1 makes a very long try. Shot clock buzzer goes off just after ball leaves hand. During the long flight of the ball, the game clock continues to run. Ball contacts backboard, but not rim. Official blows whistle, as time in the half expires.

What result? 3 seconds put back on game clock? End of half. Something else?