I think it means parallel branches. Normally in git you can use one branch at a time. With agentic coding you want agents to build multiple features at the same time, each in a separate branch
That has been implemented 10 years ago:
git worktree add -b feature-2 ../feature-2Even before git has the worktree feature, you could just clone the repo again (shallowly if it’s big).
Can agents not checkout different branches and then work on them? It's what people also do. I have a hard time to understand what problem is even solved here.