How to reset the password through CLI in an identity-store?

I am looking for a way to reset passwords of users in the identity store through CLI. The closest command I found is "update-user" https://docs.aws.amazon.com/cli/latest/reference/identitystore/update-user.html

But that doesn't explain which Attribute should I reference. Password? If that's the case, which value should I set to trigger a password reset?