Cleaning nozzle after filament run-out

I'm looking for suggestions on how to clean out the nozzle of a Rapido UHF (0.6 mm nozzle installed) where I ran out of filament (PETG) and there's some cold filament stuck in the heat break (apparently) between the LGX lite and the Rapido. I haven't had any luck pushing it down or melting it out or cleaning it with needles. I'm hoping to avoid taking it apart, but that's going to be my next step barring any better ideas.
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