And Fabrice Bellard, the original author of ffmpeg, went on to create qemu which pretty much made open-source virtualization possible. Also TCC (even if I don’t think that one is widely used), he established a world record for computing decimals of Pi using a single machine that had ~2000× less FLOPS than the previous record, and so much more…
CVS is the authoritative repository of code, and they recommend to users to use that or reposync (built atop of CVS) to keep their system updated.
There is also a GitHub mirror , and got is an OpenBSD project, and I suspect a number of devs use one of those for local work until it’s time to push the changes to the authoritative tree.