fork your own copy of django first, then change the git@github.com:mtigas/django.git
bit to your repo's private URL.
cd ~/Code
virtualenv --no-site-packages django
cd django
echo "export PIP_RESPECT_VIRTUALENV=true" >> bin/activate
echo "export PYTHONPATH=\"\$VIRTUAL_ENV/test_src:\$VIRTUAL_ENV/repo\"" >> bin/activate
echo "export DJANGO_SETTINGS_MODULE="settings"" >> bin/activate