This whole story was made up by a guy on 4chan in Oct 2016 and given to Rick Wilson (never-Trump pundit). He in turn gave it to other media people and it was just re-released with no changes other than adding in Russian and British spies.
https://voat.co/v/pizzagate/1556225
https://voat.co/v/pizzagate/1557513
Nov 2016.
The whole https://voat.co/v/pizzagate site is extremely important resource to follow the pizzagate scandal.