OK... This will probably be a monthly segment. I stumbled across this conversion and I thought that it was a really good way to test your understanding of cyclohexane. Do note that this question does not exceed the bar set by the JEE Advanced.
Account for the stereochemistry in your mechanism. A mechanism can be either hand drawn or made using an online web tool. An answer will be provided in 72 hours (or earlier) if no one can provide a suitable mechanism.