Updating GitHub App access throws error

Steps to reproduce -

1. Have some private repos allowed on the install access
2. New Site/Func > Connect GitHub > see the side card saying Missing a repo > click on Go to GitHub
3. Update to allow access to some new private repo > Save
4. You are now navigated to Cloud > Error as in the image

The permissions are updated but the error from backend is shown like above. If I go back to the Project > Site | Function > New via GitHub > the updated repo list shows fine.

cc @Meldiron @Harsh

Please avoid tag core members as it may be very disruptive