Fix trailing characters in commit

buildbot/prebuilt.py

 #!/usr/bin/python
 # Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import datetime
 import multiprocessing
 import optparse
 import os
 import re
@@ skipping 151 matching lines @@
         uploaded.
       retries: The number of times to retry before giving up, default: 5
       key: The variable key to update in the git file.
         (Default: PORTAGE_BINHOST)
   """
   prebuilt_branch = 'prebuilt_branch'
   old_cwd = os.getcwd()
   os.chdir(os.path.dirname(filename))
 
   commit = cros_build_lib.RunCommand(['git', 'rev-parse', 'HEAD'],
-                                     redirect_stdout=True).output
+                                     redirect_stdout=True).output.rstrip()
   cros_build_lib.RunCommand(['git', 'remote', 'update'])
   cros_build_lib.RunCommand(['repo', 'start', prebuilt_branch, '.'])
   git_ssh_config_cmd = [
       'git',
       'config',
       'url.ssh://git@gitrw.chromium.org:9222.pushinsteadof',
       'http://git.chromium.org/git' ]
   cros_build_lib.RunCommand(git_ssh_config_cmd)
   description = 'Update %s="%s" in %s' % (key, value, filename)
   print description
@@ skipping 547 matching lines @@
                                 options.git_sync, options.sync_binhost_conf)
 
   if options.board:
     uploader._SyncBoardPrebuilts(options.board, options.build_path, version,
                                  options.key, options.git_sync,
                                  options.sync_binhost_conf,
                                  options.upload_board_tarball)
 
 if __name__ == '__main__':
   main()