Battery module isn’t necessarily the battery itself.
When you’re this close and you don’t have the vehicle yet why would you reject it? All vehicles can have issues the fact Skoda want to fix it before giving it to you should instill confidence they care about doing the right thing.
Unless you have some underlying reason to do so I’d just wait for it. If you go order anything else you’re looking at a lengthy wait no doubt unless you get lucky. Even worse case you get the care and there’s a fault that can’t be rectified you can still reject the car at that point if need be.
I wouldn’t talk about rejecting the car at this point. You wouldn’t be rejecting it you’d simply be changing your mind as you haven’t input your pin yet so there’s no penalty on you.