Wouldnt be surprised atall if they have quite alot tbh.Either Russia has endless amounts of troops in Ukrainian clothes and weapons, or, maybe, it was a bad idea.
Its very effective and dissruptive.
(Ala Otto Skorzeny’s operation Grief during ww2 ardennes 1944).
Even if special ops like that fail at direct aims, they succeed in createing chaos slowing the opposition alot and increasing the risks of friendly fire inncidents.