Temporarily relocating an electrical panel while rebuilding a room
The only reasonable way I can think of is to buy an outdoor rated panel and put it on a wall outside right next to where you will be working, with some temporary duct work for the conductors going back into the house. You will at some point need to call your utility for a disconnect / meter pull to move the main conductors, but wait until the last minute for that and be totally ready for it first.