Both UANTIFA (antifascists movement in and from Ukraine, in armed reistance against Putin's war of aggression) and the BO AK ("Anarcho-Communists Combat Organization" in and from Russia resisting Putin's war through e.g. mobilization sabotage in Russia) agree that the strategy for now with the mercenary Wagner Group in mutiny against the Putin-regime's State military is to just let them fight each other, to cease attacks on e.g. mobilization depots as those are now more likely to be prepared to defend against a fully military equipped attacker instead of partisan molotov throwers,
but instead acquire arms, analyze and plan for what opportunities may arise from the two parts of the enemy's forces destroying each other.
For what it's worth, seems like sound strategy to me.