You can solo in Gm or arpeggiate the chords separately, just be sure to target the closest notes on the changes or keep some sort of common pattern, and resolve on the tonic when the progression resets. A cool idea might be to ascend through the G- arpeggio, descend through the F, ascend through the Eb and then play a diminshed tension builder over the B so that you can resolve into G- again on the 1.