borgbackup 1.2.0b3 beta release - do not use this on production backup repositories.
Long changelog:
https://github.com/borgbackup/borg/blob/1.2.0b3/docs/changes.rst#version-120b3-2%C3%9F21-05-12 (oops)
If you use pip to install this, use: pip install "borgbackup==1.2.0b3"
Please give feedback in the related github discussion!