Comment 7 for bug 34376

This bug's status is still set to incomplete. I'm not sure why, but maybe I can help out with an example of how to reproduce the bug yourself:
  cd /srv/mirror/ubuntu
  mkdir hardy
  debmirror --nosource --host de.archive.ubuntu.com --root ubuntu --method=http --dist hardy,hardy-updates,hardy-security --section main,restricted,universe,multiverse,main/debian-installer,restricted/debian-installer hardy/

That will give you an error:
Won't mirror without dists/hardy-security/main/debian-installer/binary-i386/Pack
ages.gz signature in Release at /usr/bin/debmirror line 1187
( this error message is from the debian sarge version, but the problem is the same)

Here is a workaround using 3 debmirror statements:
  mkdir hardy hardy-security hardy-updates
  debmirror --nosource --host de.archive.ubuntu.com --root ubuntu --method=http --dist hardy --section main,restricted,universe,multiverse,main/debian-installer,restricted/debian-installer hardy
  debmirror --nosource --host de.archive.ubuntu.com --root ubuntu --method=http --dist hardy-security --section main,restricted,universe,multiverse hardy-security
  debmirror --nosource --host de.archive.ubuntu.com --root ubuntu --method=http --dist hardy-updates --section main,restricted,universe,multiverse hardy-updates