Preheat oven to 325 degrees F (165 degrees C). Grease 9x5-inch loaf pans.
Whisk eggs in a large bowl. Add pumpkin puree, granulated sugar, brown sugar, oil, buttermilk, and vanilla extract. Whisk until smooth
Mix flour, baking soda, baking powder, salt, cinnamon, ginger, nutmeg, and cloves. Whisk until well combined.
Pour the batter into the prepared loaf pan and spread it around into one even layer. Bake for 50 to 60 minutes or until a toothpick inserted in the center of each loaf comes out clean.
Transfer to a wire rack, let cool in the pan for 20 minutes, put the parchment paper on it and carefully remove the bread from the pan, then return to the wire rack to cool completely.