--worktree
A Claude Code CLI flag, read out of the shipped bundle. It has been in the build since v2.1.138, including the newest one read.
What it is
Start Claude in an isolated [git worktree](/docs/en/worktrees) at <repo>/.claude/worktrees/<name>. If you don't give a name, Claude Code generates one. Pass #<number>, a GitHub pull request URL, or a GitLab merge request URL to [fetch that PR or MR from origin and branch the worktree from it](/docs/en/worktrees#branch-from-a-pull-request). Branching from a GitLab merge request requires Claude Code v2.1.233 or later
Anthropic's own wording. Read off CLI reference, captured 2026-08-28.
Presence across releases
| Releases | Reading | Declared type | Default |
|---|---|---|---|
| 2.1.245 – 2.1.250 5 releases | never mined | — | — |
| 2.1.138 – 2.1.243 95 releases | in the build | — | — |
A row reading never mined is a release with no archived bundle behind it. Nothing was read out of it, so nothing here says whether the name was in it. A declared type or a default is only ever what that release's own bundle stated.
Changelog entries naming it
No changelog entry here has ever named it. That is a statement about what has been written, not about the name: it has been in the build since v2.1.138 without anybody writing a line about it.
Documentation pages
- CLI reference reference table Claude Code CLI
- Claude Code changelog mentions it Claude Code CLI
- Explore the .claude directory mentions it Claude Code CLI
- Common workflows mentions it Claude Code CLI
- Run Claude Code behind a corporate launcher mentions it Claude Code CLI
- Desktop application mentions it Claude Code CLI
- Hooks reference mentions it Claude Code CLI
- Automate actions with hooks mentions it Claude Code CLI
- Set up Claude Code in a monorepo or large codebase mentions it Claude Code CLI
- Plugins reference mentions it Claude Code CLI
- Claude Code settings mentions it Claude Code CLI
- Week 19 · May 4–8, 2026 mentions it Claude Code CLI
- Week 33 · August 10–14, 2026 mentions it Claude Code CLI
A reference table page is one whose own table defines this name, and it is where the description above came from. A page that mentions it carries the name somewhere in its text and may say nothing about it at all. Every page carrying it.
Read out of the published npm bundle release by release, and out of Anthropic's own documentation as this site captured it. Nothing on this page is a description anybody here wrote about what the CLI flag does. All CLI flags.