To test this script on your local machine:

    $ rsync -r svn:/mnt/data/home/pop09951/dbis/access.d .
    $ mkdir access.bak
    $ chmod 770 access.d access.bak
    $ for i in $(cd access.d; ls); do mkdir -p "repos/$i"; chmod 640 "access.d/$i"; done
    $ echo '# initial version' > access

Then do the testing:

    $ python2 mkaccess