datastorer error

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/usr/bin/pip run on Mon May 20 12:59:50 2013
Obtaining ckanext-datastorer from git+git://github.com/okfn/ckanext-datastorer.git#egg=ckanext-datastorer
  Cloning git://github.com/okfn/ckanext-datastorer.git to ./src/ckanext-datastorer
  Found command 'git' at '/usr/bin/git'
  Running command /usr/bin/git clone -q git://github.com/okfn/ckanext-datastorer.git /home/userdata1/ckan/lib/default/src/src/ckanext-datastorer
  Complete output from command /usr/bin/git clone -q git://github.com/okfn/ckanext-datastorer.git /home/userdata1/ckan/lib/default/src/src/ckanext-datastorer:

----------------------------------------
Command /usr/bin/git clone -q git://github.com/okfn/ckanext-datastorer.git /home/userdata1/ckan/lib/default/src/src/ckanext-datastorer failed with error code 128
Exception information:
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/pip/basecommand.py", line 126, in main
    self.run(options, args)
  File "/usr/lib/python2.7/dist-packages/pip/commands/install.py", line 223, in run
    requirement_set.prepare_files(finder, force_root_egg_info=self.bundle, bundle=self.bundle)
  File "/usr/lib/python2.7/dist-packages/pip/req.py", line 930, in prepare_files
    req_to_install.update_editable(not self.is_download)
  File "/usr/lib/python2.7/dist-packages/pip/req.py", line 378, in update_editable
    vcs_backend.obtain(self.source_dir)
  File "/usr/lib/python2.7/dist-packages/pip/vcs/git.py", line 107, in obtain
    call_subprocess([self.cmd, 'clone', '-q', url, dest])
  File "/usr/lib/python2.7/dist-packages/pip/__init__.py", line 255, in call_subprocess
    % (command_desc, proc.returncode))
InstallationError: Command /usr/bin/git clone -q git://github.com/okfn/ckanext-datastorer.git /home/userdata1/ckan/lib/default/src/src/ckanext-datastorer failed with error code 128
/home/userdata1/.pip/pip.log (END)