Heat sesame oil in a large skillet or wok over medium heat.
Add ground pork and cook until browned, breaking it into crumbles. Drain excess grease if needed.
Stir in onion, garlic, and ginger; cook until fragrant, about 2 minutes.
Add coleslaw mix, soy sauce, rice vinegar, and sriracha. Stir-fry for 5–7 minutes until cabbage is tender but still crisp.
Taste and adjust seasonings if needed.
Garnish with green onions and sesame seeds before serving.