As is traditional:

You pronounce it with an understanding of how difficult it must be to speak French and have most of the CS world talk about bit twiddling.

https://translate.google.com/#fr/en/coq, click "listen". Or, in French IPA (https://en.wikipedia.org/wiki/Help:IPA_for_French), kɔk (roughly transcribed to English, "couk")

But, everyone I know (including me) who I've heard pronunce it just pronunces it "cock".