PS acquired git prime and rebranded it as Flow, and then basically just kinda ignored it tbh. Basically it analyzed git data and gave info like velocity, how much work was new features vs refactors, etc. Very simplified explanation but for places where code-level analysis is used for performance tracking it can be useful. The problem imo is that while that kind of info is certainly interesting, in most cases it's not really that useful or actionable in practice.