I looked at a C++ codebase from 1997 at a previous job - I don't know much about the history but comments in one of the old files tracked dates and changes to 2

I looked at a C++ codebase from 1997 at a previous job - I don't know much about the history but comments in one of the old files tracked dates and changes to 2001. Not sure what happened after that but in 2017 someone copy-pasted the project from TFS to git and obliterated the prior history.