Preheat the oven to 450 degrees and lightly grease a baking sheet.
In a bowl of an electric mixer, combine flour, cinnamon, sugar, baking powder, baking soda, and salt. Mix on low to combine ingredients.
Chop cold butter into pieces and add it to the flour mixture. Add scoops of shortening into flour as well. Mix on low, until batter resembles coarse crumbs.
Pour cold buttermilk into the center of the mixture and add pumpkin puree and honey. Mix until just combined. Dough will be sticky.
Transfer dough onto a lightly floured surface and sprinkle with a little more flour. Knead dough 5–6 times and pat into a ½-inch-thick circle.
Using a cookie cutter (about 2 inches in diameter), cut out the biscuits. Rework dough scraps into a ball (kneading it as little as possible) and shape it into a circle again. Cut out more biscuits.
Place biscuits on the baking sheet, leaving about an inch in between each one.
Bake for 12–15 minutes, until raised and golden brown.