You can use [Client Redirect](
https://docs.metaplay.io/game-logic/utilities/logic-versions.html#using-client-redirect) to make the prod environment redirect the review clients to another environment.
So for example let's say we have game version 100 and want to update to 101. You could first update let's say
staging environment to version 101, and then in
prod server set a redirect newer versions to the
staging. Then submit client version 101 for review. When review passes:
* disable the redirect
* publish the clients
* update the prod server