title: Django model save not working in daemon mode but working with runserver
body: <p>I am saving github repo to server once user add their github repo, see this models.</p>
  <pre><code>class Repo(models.Model):
      url = models.CharField(help_text='github repo cloneable',max_length=600)
      def save(self, *args, **kwargs):
          # os.system('git clone https://github.com/somegithubrepo.git')
          os.system('git clone {}'.format(self.url))
          super(Repo, self).save(*args, **kwargs)
  </code></pre>
  <p>Everything is working fine what I want in both local server and remote server like digitalOcean Droplet, when I add public github repo, the clone always success.</p>
  <p>it works when I run the server like this: <code>python3 manage.py runserver 0.0.0.0:800</code></p>
  <p>But when I ran in daemon mode with gunicorn and nginx, it doesn't work,</p>
  <p>Everything is working even saving the data in database, only it is not cloning in daemon mode, what's wrong with it?</p>
  <p>this is my gunicorn.service</p>
  <pre><code>[Unit]
  Description=gunicorn daemon
  After=network.target
  
  [Service]
  User=root
  Group=www-data
  
  WorkingDirectory=/var/www/myproject
  Environment=&quot;PATH=/root/.local/share/virtualenvs/myproject-9citYRnS/bin&quot;
  ExecStart=/usr/local/bin/pipenv run gunicorn --access-logfile - --workers 3 --bind unix:/var/www/myproject/config.sock -m 007 myproject.wsgi:application
  
  [Install]
  WantedBy=multi-user.target
  </code></pre>
  <p>Note again, everything is working even the gunicorn, the data is saving in database, only it is not cloning github repo, even not firing any error.\</p>
  <p>What's the wrong with this? can anyone please help me to fix the issue?</p>