Gith patrol fight is a lot harder but the Fighter's new disarming attack is really powerful against them. Druids can also use heat metal for the same effect, both abilities cause enemies to drop their weapons now. It completely neuters the Giths damage output and makes the fight winnable without cheesing it.
I still think the encounter is overtuned though because its so unforgiving, even bad initiative rolls is enough to lose the fight since they all get to attack first and kill half the party before you even get a turn.
I jist can't believe they made it harder. It was like they not only disregarded my feedback previously, they decided to do the opposite of what I said. The fight wouldn't be as impossible with 6 Level 5 characters BEFORE making it harder.