In a bowl, whisk together the honey, soy sauce, ketchup, minced garlic, rice vinegar, sriracha, and ground ginger until smooth. Set aside.
Pat the pork tenderloin dry and season lightly with salt and pepper. If it is too long for the pot, cut it in half. Set the Instant Pot to saute mode and heat the olive oil. Sear the pork for about 2 minutes on each side until golden brown, then remove.
Pour the chicken broth into the pot and scrape up any browned bits. Pour in the honey garlic sauce and stir to combine. Return the seared pork tenderloin to the pot and spoon the sauce over it.
Lock the lid, set the valve to sealing, and cook on high pressure for 3 minutes. Allow a natural pressure release for 10 minutes, then quick release the remaining pressure.
Remove the pork to a cutting board and tent with foil. Check that the internal temperature is at least 145 degrees F.
Set the Instant Pot to saute mode. In a small bowl, whisk together the cornstarch and cold water, then stir this slurry into the sauce. Simmer for 2 to 3 minutes, stirring constantly, until the sauce thickens and becomes glossy.
Slice the pork tenderloin into 1/2-inch thick medallions and arrange on a serving platter. Drizzle the thickened honey garlic sauce generously over the top and garnish with sliced green onions and sesame seeds.