Merge pull request presslabs#256 from PressLabs/fix-checkout-failure-242

Catch chmod exception in repository checkout. (#closes 242)

Author: vtemian

gitfs/repository.py

@@ -111,7 +111,11 @@ def checkout(self, ref, *args, **kwargs):
             current_stat = os.lstat(full_path)
 
             if stats['st_mode'] != current_stat.st_mode:
-                os.chmod(full_path, current_stat.st_mode)
+                try:
+                    os.chmod(full_path, current_stat.st_mode)
+                except OSError:
+                    log.info("Repository: Checkout couldn't chmod %s",
+                             full_path)
                 self._repo.index.add(self._sanitize(path))
 
         return result