Copycat Taco Bell Chicken Burrito

Name: Copycat Taco Bell Chicken Burrito
Ingredients: ⅛ cup buttermilk; ⅛ cup ranch dressing; 1 avocado; ¼ tsp Kosher salt; 2 tbsp sour cream; 1 tbsp butter; 1 cup long grain rice; 2 cups low sodium chicken broth; 1 tsp salt; ¼ tsp black pepper; ¼ tsp cumin; 1 fresh lime, (zested and juiced); 2 tbsp fresh cilantro, (chopped); 1½ lbs boneless, skinless chicken breasts; 2 tbsp olive oil; 15 oz tomato sauce; 2 tsp white vinegar; 3 cloves garlic, (minced); 2 tsp chili powder; ½ tsp cumin; 1 tsp dried oregano; ½ tsp sugar; 1 tsp Kosher salt; ½ tsp pepper; 2 cups cheddar cheese, (shredded); 6 large flour tortillas