No, that's not possible. We don't run the ML until the decision task runs, so can't know what it will pick ahead of time. Even if we allowed uploads of arbitrary patches to the REST API, it would make your try pushes take 3-5 minutes. Solving this bug would be much easier.
Bug 1635921 Comment 4 Edit History
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No, that's not (easily) possible. We don't run the ML until the decision task runs, so can't know what it will pick ahead of time. Even if we allowed uploads of arbitrary patches to the REST API, it would make your try pushes take 3-5 minutes. Solving this bug would be much easier.