Preheat the oven to 400°F (200°C). Line a baking sheet with parchment paper and set it aside.
Mix the dry ingredients: In a large bowl, whisk together the flour, brown sugar, baking powder, salt, cinnamon, ginger, nutmeg, and cloves until evenly combined.
Cut in the butter: Add the cold butter and cut it into the flour mixture using a pastry cutter until the mixture resembles coarse crumbs with a few small pieces of butter remaining.
Mix the wet ingredients: in a separate bowl, whisk together the pumpkin puree, heavy cream, and vanilla extract until smooth.
Make the dough: Pour the pumpkin mixture into the dry ingredients. Gently stir with a spatula just until a soft dough forms. Do not overmix.
Shape the dough: Transfer the dough to a lightly floured surface. Gently shape it into a thick round, being careful not to knead it excessively.
Cut into wedges: Using a sharp knife or bench scraper, cut the dough into 8 wedges. Transfer the wedges to the prepared baking sheet, leaving space between them.
Bake: Bake for 16–18 minutes, or until the scones are lightly golden around the edges and the centers are set.
Cool: Remove the scones from the oven and let them cool on the baking sheet for several minutes. Transfer them to a wire rack to cool further.
Make the maple glaze: Whisk the powdered sugar and maple syrup together. Add heavy cream a little at a time until the glaze reaches a smooth, drizzleable consistency.
Glaze the scones: Drizzle the maple glaze over the cooled or slightly warm scones. Let the glaze set briefly before serving.