Preheat oven to 350°F (175°C). Grease and line a 9x5-inch loaf pan with parchment paper, leaving some overhang for easy removal.
In a medium bowl, sift together flour, baking soda, baking powder, salt, cinnamon, nutmeg, cloves, and ginger.
In a large bowl, whisk or stir together granulated sugar, brown sugar, and eggs until well combined. Add oil, milk, vanilla, and pumpkin puree. Whisk until smooth.
Gently fold dry ingredients into wet mixture with a spatula until just combined. Do not overmix.
Pour batter into prepared loaf pan and smooth the top. Sprinkle evenly with pepitas. Bake for 55–65 minutes, or until a toothpick inserted in the center comes out clean.
Let bread cool in the pan for 15 minutes before lifting out to a wire rack to cool completely.