In another context, when making a point about code maturity, someone noted that people were still finding and fixing bugs in Postgres code that was over 10 year

In another context, when making a point about code maturity, someone noted that people were still finding and fixing bugs in Postgres code that was over 10 years old. In those situations, I think preserving info about the provenance of every piece of code is extremely valuable. Particularly if you expect the project to live long enough to make another SCM system transition in the future.