How to upload iOS build only for TestFlight internal testing using CLI altool?

Question

Xcode 15 has a new feature - upload iOS build without the possibility of publishing to AppStore:

But how can I use this feature in the command line app altool? I can't find appropriate arguments for this, although Fastlane already has - at least it was mentioned in the GitHub discussion:

gym(
    ...
    export_options: {
        testFlightInternalTestingOnly: true
    }
)