directory specific files such as HEAD, index, etc. `-` may also be
specified as `<commit-ish>`; it is synonymous with `@{-1}`.
+
+If <commit-ish> is a branch name (call it `<branch>` and is not found,
+and neither `-b` nor `-B` nor `--detach` are used, but there does
+exist a tracking branch in exactly one remote (call it `<remote>`)
+with a matching name, treat as equivalent to
+------------
+$ git worktree add --track -b <branch> <path> <remote>/<branch>
+------------
++
If `<commit-ish>` is omitted and neither `-b` nor `-B` nor `--detach` used,
then, as a convenience, a new branch based at HEAD is created automatically,
as if `-b $(basename <path>)` was specified.
such as configuring sparse-checkout. See "Sparse checkout"
in linkgit:git-read-tree[1].
+--[no-]guess-remote::
+ With `worktree add <path>`, without `<commit-ish>`, instead
+ of creating a new branch from HEAD, if there exists a tracking
+ branch in exactly one remote matching the basename of `<path>,
+ base the new branch on the remote-tracking branch, and mark
+ the remote-tracking branch as "upstream" from the new branch.
++
+This can also be set up as the default behaviour by using the
+`worktree.guessRemote` config option.
+
--[no-]track::
When creating a new branch, if `<commit-ish>` is a branch,
mark it as "upstream" from the new branch. This is the