Unclear The extra condition that must hold alongside a missing record is not known, so it is unclear when a worktree will no longer be reused.
What
A worktree is an extra working copy of a git repository. When Claude Code sets one up, it looks for a recorded state for it, meaning a saved commit. That lookup now reports either a recorded commit or that nothing was recorded. When nothing was recorded and a further condition holds, Claude Code no longer takes the path that reuses the existing worktree. Only the saved commit, rather than the whole record, is now passed on to the setup step.
Why
This changes when an existing worktree is reused and when it is prepared again.
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The writer flagged doubt
The extra condition that must hold alongside a missing record is not known, so it is unclear when a worktree will no longer be reused.