erp5testnode: fix previous commit

erp5/util/testnode/Updater.py

@@ -201,6 +201,7 @@ class Updater(object):
           self._git('svn', 'rebase')
         else:
           self._git('fetch')
+          self._git('update-index', '--refresh') # see note above
           self._git('reset', '--merge', '@{u}')
         self.revision = self._git_find_rev(self._git('rev-parse', 'HEAD'))
     elif self.getRepositoryType() == SVN_TYPE: