What directory is the 'working copy'? There can be two interpretations: the current dir and the .git dir.
+
+> It is fairly common terminology amoung all version control systems to use
+> "working copy" to refer to a checkout from version control, including
+> copies of all the versioned files, and whatever VCS-specific cruft that
+> entails. So, a working copy is everything you get when you `git clone`
+> a repository. --[[Joey]]