We should periodically archive the metadata that GitHub associated to each repository.
At the time of writing these info are retrievable via the repos/ API endpoint, see:
$ curl --silent -H "Accept: application/vnd.github.v3+json" https://api.github.com/repos/octocat/hello-world { "id": 1296269, "node_id": "MDEwOlJlcG9zaXRvcnkxMjk2MjY5", "name": "Hello-World", "full_name": "octocat/Hello-World", "private": false, "owner": { "login": "octocat", [...] "deployments_url": "https://api.github.com/repos/octocat/Hello-World/deployments", "created_at": "2011-01-26T19:01:12Z", "updated_at": "2020-10-12T19:39:07Z", "pushed_at": "2020-10-10T17:46:53Z", "git_url": "git://github.com/octocat/Hello-World.git", [...] "temp_clone_token": null, "network_count": 1468, "subscribers_count": 1689 }