Transplant it to a larger pot. At least a 1 gallon, 2 would be better. I'd expect it to survive buried in a pile of leaves, but if you don't trust that, put it into the garage when it regularly stays below freezing at night.

If you know where you want to plant it, that would be the best option. It will survive. Been there, done that, John Cabot is currently about 10 ft tall.

Due to the size of its pot I'd go get a bag of soil. Fill a larger pot with the soil and place the tiny pot in there. Then place in unheated garage up off the floor. Water occasionally thru the winter. Mad said it best.

An unheated garage is good if it's insulated. If not it's just OK and still iffy. If you are putting it in the garage I would do as Mad suggests and put it in a bigger pot. That little pot will afford it NO insulation at all. You need some soil around the roots if there is any hope of protecting it. Keep it off the cement and water it some once a month all winter.

Or you can just dig a hole in your cleaned out veggie garden and sink the pot for the winter. If you do that please put a stick or something sticking up to mark where you buried it. I, unfortunately, learned that the hard way when I sliced one of my seedlings in half trying to dig it out in the spring because I couldn't find it, lol!