Place chicken in the bottom of your instant pot.
In a small bowl combine, soy sauce, honey, rice vinegar, sesame oil, garlic, and ginger in a small bowl and mix until well blended. Pour over the chicken.
Secure the lid and set the pressure release to sealing position. Set instant pot to poultry or meat mode depending on your version, and set for 6 minutes.
When the time is done, release pressure according to your appliance's instructions and remove chicken to bowl and carefully shred with fork.
Transfer sauce to a pan and heat on the stove top until it comes to a boil.
Combine cornstarch and water and mix well.
Slowly pour into the sauce, stirring constantly until sauce thickens.
Add chicken and coat with sauce.
Serve over rice and garnish with green onion.