I've just read an article on a Russian Website that the first Bf109F-2 captured in flyable condition was Bf-109F-2, Werke No. 9209, 8./JG-51 flown by Oblt. Anton Nies.
Here the story:
"Just by luck, on 22 February 1942 Ober-Lieutnant A. Niss, commander of the JG51 Squadron's 8th Detachment, got lost and was fired on from a machine gun near Tushino Airfield. His radiator and fuel tank were damaged and the German officer was forced to land within Soviet troop unit positions.
Captured by Red Army soldiers, the fighter was quickly restored by technical personnel from the 47th Aviation Division based in Tushino, but the first flight of the captured Messerschmitt ended in a crash landing. The right undercarriage leg and wing tip were broken. The machine had to undergo one more repair (this time by a TsAGI team) and then Me 109F No. 9209 was handed over to the Air Forces Scientific Research Institute for comprehensive testing. Engineer-Captain A. S. Rozanov, one of the institute's foremost experts on German aircraft, accepted the bird. "
http://www.airpages.ru/eng/lw/bf109f.shtml