My info may be out of date but probably not unfortunately. Paid games have their unlock time set based on what store you bought then from. So to have an NZ unlock time you have to have paid for it in NZ dollars.I apologize is this has been asked but can we use the New Zealand trick on a Xbox?
Gamepass games wool differently because you don't pay cash for them. So their unlock time is based on the current location of the console (which as you know you can easily change).
I'm in the UK and have bought games from the us store and had to wait ages for them to unlock.