Engineers are working on multiple sessions, and LLM is doing most of the commits/pushes. This is becoming norm at big techs.
If you are wondering what these changes are, you can take a peek at https://github.com/openclaw/openclaw/commits/main/
This isn't to say that such pace of iteration is good or bad. That's a separate discussion.
But "big tech" companies have a lot of different components. And they hit git scaling limits long before the current AI age. The commenter was asking about OAI, not big tech, committing much more code.