Set Instant Pot to saute setting and add 2-3 tbsp mild oil like grapeseed or sunflower and 1 tsp cumin seeds.
Once cumin seeds sputter, add onions and allow them to saute until translucent, about 2 minutes.
Add 1 tbsp ginger-garlic paste and stir. Add ground spices: turmeric, red chili powder and garam masala.
Add the diced tomatoes and 1 tsp sugar and 1 tsp salt. The sugar cuts the acidity of the diced tomatoes.
Stir and allow to reduce for 3-4 minutes.
Add chickpeas, cinnamon stick and 1/2-3/4 cup water.
Cover and set the instant pot to manual for 6 minutes. Quick release the steam pressure.
Carefully open the lid and simmer on saute setting for another 5-7 minutes. This step is optional, but allows the chana masala to thicken nicely.
Adjust salt to taste and garnish with cilantro.