📦 git worktree add --detach creates a lightweight copy in O(1) time — no full clone needed.
🔄 Incremental sync only copies changed files using git diff, not entire repos.
🔒 Each worktree is isolated with its own working directory.
⚡ Sync time: ~0.5-3s (vs git clone 30-60s).
💡 Use separate worktrees for parallel agent tasks, code reviews, or experimental branches.