It's not "wee bit misleading" but it just is outright stale.
Back then, before people realized the operation "to check out the path out
of index or tree-ish" belongs naturally to a command whose name is
"checkout", "to check out the named branch or a commit" was the only thing
that you could do with the command. The one-line description you quoted
above reflects that history.
Patches very much welcome; I did not notice it was kept stale.
--
To unsubscribe from this list: send the line "unsubscribe git" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html