I just did just another rsync with 'mirror.slitaz.org' for my private copy of the '.../packages/cooking' directory and found 263 files with files names like 'packages.equiv01jNSP' and 23 files with names like 'packages.txt8fNwHa'. All are of zero bytes length and appear to be temporary files left over from some other process.
I'd like to suggest to remove them from the repository.
It has happened again: This time there are "only" 7 files with files names like 'packages.equiv9z2SmY' and one named 'packages.txthMzn7S'. What might help in identifying what has caused this could be the fact that their time stamps are all around the same time.