You're correct, Aristois uses loader-v2. But even if you were to remove the URL (it regenerates because it will check SHA from the URL and replace the file if not matching) from the json and replace the jar here, it will crash because Aristois (weaver) was not updated to support the new Fabric version. It requires us updating the weaver first.
T
Thernadomguy
@Thernadomguy