The court enforces it. We're getting into movie plot politics here. The sheriff's department will not in fact ignore a district court ruling. These scenarios rapidly reach the point where the sheriff is removed from office and imprisoned for some amount of time. This is what happened to Joe Arpaio.

This is much simpler in a municipality: the board simply fires the village manager and the chief. A sheriff is usually an elected though.

Before you reach the point of suing, you cancel contracts, payments, IT infrastructure, and have public works remove the cameras from any county-owned infrastructure.

I mean, all this is pretty silly, though, because what you really do is just turn the cameras off.