The Soviet Union made a slow start in the jet age. They did, however, capture several examples of Nazi German jet fighters. This video investigates why they didn't simply copy and then develop the ME262 and provides an overview of the twinpod fighters that were developed as competition to the MiG9.

Sources:

"Soviet Secret Projects Fighters Since 1945" by Yefim Gordon and Tony Buttler
"OKB Ilyushin: A History of the Design Bureau and its Aircraft" by Sergey Komissarov, Yefim Gordon and Dmitiry Komissarov
"OKB Sukhoi: A History Of The Design Bureau And Its Aircraft" by Vladimir Antonov