A GitHub spokesperson has issued this statement [1] about a request to api.github.com: "That endpoint tracks aggregate performance metrics, and does not rely on cookies or other unique identifiers".
GitHub is still sending our usernames and other unique IDs, our device data, and the pages we visit to the collector.githubapp.com endpoint.
GitHub's claims about not tracking users are false, they do identify users in tracking requests. See this tracking URL, it's full of unique identifiers and personal data, and it is currently sent after every page load, without user consent:
https://collector.githubapp.com/github/page_view?dimensions[page]=https://github.com/&dimensions[title]
=GitHub&dimensions[referrer]=https://github.com/sessions/two-factor&dimensions[user_agent]=Mozilla/5.0
(X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0&dimensions[screen_resolution]=1000x518&dimensions[pixel_ratio]
=1&dimensions[browser_resolution]=1000x518&dimensions[tz_seconds]=0&dimensions[timestamp]
=1608247177900&dimensions[referrer]=https://github.com/sessions/two-factor&dimensions[request_id]=
9CF8:4938:4516EA:5FD134:5FDBE77E&dimensions[visitor_id]=6475638196559144773&
dimensions[region_edge]=fra&dimensions[region_render]=iad&&measures[performance_timing]=
1---600-600-600-400-400-----600-0----1608247177200--1608247176900--1608247176900--400-
400&&dimensions[actor_id]=47727044&dimensions[actor_login]=dessantbot&dimensions[actor_hash]=
a274a9ae03a3b361483e273a53aba70534c609670c058fe667d8bce4d6f33bad&dimensions[cid]=1507727009.1608247109
[1]
https://www.theregister.com/2020/12/17/github_will_no_longer...