Fix a bug where an empty directory with the name of a project confuse…

…d things

crepo.py

@@ -86,10 +86,10 @@ def ensure_tracking_branches(args):
   """Ensures that the tracking branches are set up"""
   man = load_manifest()
   for (name, project) in man.projects.iteritems():
-    wd = project.dir
-    if not os.path.exists(wd):
+    repo = project.git_repo
+    if not repo.is_cloned():
       init_project(name, project)
-    repo = GitRepo(wd)
+
     branch_missing = repo.command(
       ["rev-parse", "--verify", "-q", project.refspec],
       capture_stdout=True)

git_repo.py

@@ -35,6 +35,8 @@ def command_process(self, cmdv, **kwargs):
                    **kwargs)
     return p
 
+  def is_cloned(self):
+    return os.path.exists(os.path.join(self.path, ".git"))
 
   def is_dirty(self):
     return self.is_workdir_dirty() or self.is_index_dirty()