upload.py has a raw_input() that keeps on throwing crap, try to trap it as much as possible.

git_cl.py

 #!/usr/bin/env python
 # Copyright (c) 2011 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # Copyright (C) 2008 Evan Martin <martine@danga.com>
 
 """A git-command for integrating reviews on Rietveld."""
 
 import errno
@@ skipping 966 matching lines @@
       remote_url = keys.get('URL', None)
   else:
     if cl.GetRemoteUrl() and '/' in cl.GetUpstreamBranch():
       remote_url = (cl.GetRemoteUrl() + '@'
                     + cl.GetUpstreamBranch().split('/')[-1])
   if remote_url:
     upload_args.extend(['--base_url', remote_url])
 
   try:
     issue, patchset = upload.RealMain(['upload'] + upload_args + args)
+  except KeyboardInterrupt:
+    sys.exit(1)
   except:
     # If we got an exception after the user typed a description for their
     # change, back up the description before re-raising.
     if change_desc:
       backup_path = os.path.expanduser(DESCRIPTION_BACKUP_FILE)
       print '\nGot exception while uploading -- saving description to %s\n' \
           % backup_path
       backup_file = open(backup_path, 'w')
       backup_file.write(change_desc.description)
       backup_file.close()
@@ skipping 425 matching lines @@
              'and retry or visit go/isgaeup.\n%s') % (e.code, str(e)))
 
   # Not a known command. Default to help.
   GenUsage(parser, 'help')
   return CMDhelp(parser, argv)
 
 
 if __name__ == '__main__':
   fix_encoding.fix_encoding()
   sys.exit(main(sys.argv[1:]))