Junio C Hamano [off-list ref] writes:
quoted
-Updates files in the working tree to match the version in the index
-or the specified tree. If no pathspec was given, `git checkout` will
-also update `HEAD` to set the specified branch as the current
-branch.
+`git checkout` has two main modes:
Another thing I noticed but forgot to mention.
quoted
+
+1. **Switch branches**, with `git checkout <branch>`
Does everybody really understand what it means to "switch branches"
without further explanation?
Also "<branch>" -> "(<branch> | <commit>)", perhaps, as working on
the unnamed branch (aka detached HEAD) behaves very much the same
way as working on a named branch.