Sortof.

There is plenty of evidence that the Germans basically would just take a captured Soviet T-34 or KV, slap a Balkankruez on the side, and put it to good use. However, going the other way, the Soviets, with less faith in their ability to capture he relatively small amounts of German supplies going around, would convert captured PzIii hulls into SPGs such as the Su76i which used Soviet weapons,