I'm not very familiar with github and it's web interface except how to do basic operations (view the uploaded files, download as zip, fork project)
Recently Microsoft open sourced the GWBASIC assembly source code, and all the files in the project show that they were committed 38 years ago except README.md which was added 5 days ago
I always thought the commit date was based on when the file as first uploaded to github, but doesn't seem to be the case. What is happening here, or did github actually exist in 1983?