Understanding Git Worktrees in Claude Code

Before moving on to merging, we need to understand how Git Worktrees function under the hood and how version control behaves in this setup. The goal is to have the right intuition for what is happening when Claude Code creates isolated working copies.

When Claude Code creates a Worktree, it creates a separate working directory that is linked to the repository but checked out to a different branch.

Figure 10.20 – Git Worktrees architecture used by Claude Code for parallel development

How Claude Code uses a Worktree

The flow is easier to understand when we look at it step by step. What follows is the exact sequence of actions that take place when Claude Code creates and begins working inside a Worktree:

1. Claude Code creates a Worktree with a new branch. For example, we can name the Worktree vigilant feistel (auto-generated by Claude Code).
2. All code and all changes happen inside the Worktree directory.
3. When we commit the code, the commit...