This is exactly what Google's internal system does: https://cacm.acm.org/magazines/2016/7/204032-why-google-stores-billions-of-lines-of-code-in-a-single-reposit

This is exactly what Google's internal system does: 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... The SCM, the CI, the Merge Request system, the build system, they're all tied together into a single thing. Google has open sourced parts of it but nothing exists as a whole unit the way Google does it