This is how google manages these changes: https://cacm.acm.org/magazines/2016/7/204032-why-google-stores-billions-of-lines-of-code-in-a-single-repository/fullt

This is how google manages these changes: https://cacm.acm.org/magazines/2016/7/204032-why-google-stores-billions-of-lines-of-code-in-a-single-repository/fulltext https://cacm.acm.org/magazines/2016/7/204032-why-google-stor... this was written 3 years ago and scale has only grown. But at the time the numbers quoted in the article are 25,000 authors / day w/ 16,000 commits and another 24,000 commits / day from automated sources