It's not Musk-envy, it's just everyone is running into similar scaling issues at the same time. Agentic coding is breaking Github, so everyone is moving towards new ways of working with git.
Anthropic built their own system
https://www.anthropic.com/research/redesigning-source-contro...
and so did OpenAI
https://openai.com/index/scaling-git-at-openai/