>From what I see, upstream version 1.7.1 fixes this (https://github.com/borgmatic-collective/borgmatic/releases/tag/1.7.1):
#574: Fix for potential data loss (data not getting backed up) when the "patterns" option was used with "source_directories" (or the "~/.borgmatic" path existed, which got injected into "source_directories" implicitly). The fix is for borgmatic to convert "source_directories" into patterns whenever "patterns" is used, working around a potential Borg bug: borgbackup/borg#6994 Could you please package that (or the newer 1.7.2) to work around this? thanks! iustin