code: def update_all_view(self, request):
          
          LOG.info("Total update requested.")
          total_count = errors = 0
          for repo in self.model.objects.all():
              total_count += 1
              try:
                  repo.pull()
              except:
                  LOG.exception('While updating %s.' % repo)
                  errors += 1
          msg = "{0} repos successfully updated, {1} failed.".format(total_count,
                                                                     errors)
          self.message_user(request, msg, level=messages.SUCCESS)
          return redirect('admin:registry_clonedrepo_changelist')
docs: Update all repositories and redirect back to the repo list.