On Thu, Aug 30, 2018 at 4:12 AM Jeff King <p...@peff.net> wrote:
> The doc-diff script immediately resolves its two endpoints
> to actual object ids, so that we can reuse cached results
> even if they appear under a different name. But we still use
> the original name the user fed us when running "git
> checkout" in our temporary worktree. This can lead to
> confusing results:
> [...]
>   - we didn't pass --detach, which meant that using a branch
>     name would cause us to actually check out that branch,
>     making it unavailable to other worktrees.

Oof. The initial worktree creation correctly uses --detach, but indeed
the later git-checkout doesn't. I missed that too when reading over
this script.

> We can solve this by feeding the already-resolved object id
> to git-checkout. That naturally forces a detached HEAD, but
> just to make clear our expectation, let's explicitly pass
> --detach.

Specifying --detach explicitly makes a lot of sense, even if it is
implied in this case.

> Signed-off-by: Jeff King <p...@peff.net>

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