How to lie unnoticeably (5)

I believe the answer is:

doggo

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'how' is the definition.
Both the definition and answer are adverbs. Maybe they are linked in a way I don't understand?

I don't understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for doggo that I've seen before include "(Lie) concealed" , "lying to avoid detection!" , "Lie . . . . . , motionless or hidden" , "How some people lie!" , "in secret" .)

I've seen this clue in the Evening Standard.

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