There is NO WAY that the remnants of the Rebel fleet, which amounted to a handful of ships, managed to destroy the incoming debris from a man made object the size of a MOON. Not only would they need to resupply their fighters and capital ships... not only would they have trouble manning enough forces to take out the literally billions of fragments big enough to not burn up on re-entry... but they would have needed to do it all within a few minutes/hours of the end of the battle.
I CALL SHENANIGANS!