I may be misunderstanding what you are referring to here, but this does not seem to be accurate. Pkg runs a clone the first time, and clones are tracked by GH.
I’m not aware of anything turnkey/built-in. There have been occasional discussions about (optional) telemetry, but no implementation yet to my knowledge.
As far as GitHub, if you want clone data it may be helpful to start with GitHub.jl and add support for the traffic API (still-in-beta).