[Borgbackup] extract produced wrong uid/gid

[grumpy at mailfence.com]

yesterday i had my first big test of borg
i had to reconstruct a system on a new drive
the extract was no problem
i found that many files and directories had been restored with the wrong uid and/or gid
i use the borg-pull method described here for backups
https://github.com/borgbackup/borg/issues/900
after a little examination i saw that the bad uid/gid matched the uid/gid of the server do'n the pull'n
is the pull method responsible for the screwup