Dissolve yeast in warm water in a large bowl. Let stand until creamy, about 10 minutes. Heat buttermilk in a small saucepan until warm to the touch.

Pour buttermilk and oil into the yeast mixture and mix well. Combine flour, salt, and baking soda. Stir the flour mixture into the liquid 1 cup at a time until a soft dough forms. Turn the dough out onto a lightly floured surface and knead 20 times. Cover and let rest for 15 minutes. Stir together butter, brown sugar, and cinnamon in a small bowl.

Roll dough out into a large rectangle on a lightly floured surface. Spread the brown sugar and butter mixture over the dough. Roll up into a log and pinch the seam to seal. Slice into 1-inch pieces and place cut-side up in a lightly greased 10x15-inch baking pan. Cover and let rise for 30 minutes, or refrigerate overnight. If baking immediately, preheat the oven to 400 degrees F (200 degrees C).

Bake in the preheated oven until golden brown, about 20 to 25 minutes. Let stand for 2 to 3 minutes before serving.