You can clone with
HTTPS or Subversion.
I hear from the users that this app is hard to understand, while the robots file seems to be a simple concept.
Would it make sense to offer an "easy" option where the whole file would be just a plain editable field?
The purpose is to be able to programmatically add/remove robots.txt entries instead of having to modify a plain file. Of course it's very easy to just render a plain text file with an own view. Or just use https://pypi.python.org/pypi/django-robots-txt
Programmatic access is useful, but from the human usability standpoint there could be improvements, I think.
Just a comment - I understand that it would take effort to improve the UI.