In a medium bowl, add cream cheese, hot sauce, sour cream, and garlic.
Mix until well blended.
Stir in the rotisserie chicken.
Add 1/2 cup of the cheese, stirring until everything is well blended.
Spoon into an Instant Pot baking dish.
Top with the remaining cheese.
Cover with foil.
Place the trivet at the bottom of your Instant Pot.
Add the water to the bottom of the Instant Pot.
Place the baking dish with the buffalo chicken dip on top of your trivet in your Instant Pot.
Set to "manual" for 7 minutes.
Use the Natural release.
Garnish with RedHot Sauce and green onions.