in for-holger
Andreas Beckmann (3):
      p-s.deb: use basetgz-dir = /var/cache/piuparts/basetgz
      p.conf: set basetgz-directory when running from git
      p.conf: drop .tgz settings
that should work on piatti, you should
  mv /org/piuparts.debian.org/slave/*/*.tar.gz*
/org/piuparts.debian.org/slave/basetgz/
or something like this
Andreas