Combine apple cider, bourbon, apple brandy, lemon juice, cinnamon syrup, and bitters in a large serving pitcher. Stir well to combine, about 20 seconds. Refrigerate until well chilled, about 45 minutes.
Remove the cocktail from the refrigerator, and stir well to recombine. Divide the cocktail evenly among 8 ice-filled rocks glasses or copper mule mugs. Garnish each cocktail with 2 whole cloves.
