Quick look on YouTube, this guy says "cock" [short staccato 'k' at the end] https://www.youtube.com/watch?v=WFen8x66ETY and this guy https://www.youtube.com/watch?v=sW4uki0Fr8I - both apparently French (though the guy on the second one really sounds like he's faking it!).

In your example the 'o' is more precise and the 'k' is swallowed a little.

I'd expect they're different accents, perhaps your example is more Northern French (I really don't know).