Backward incompatible and other important changes
* The "pack-redundant" command, which has been left stale with almost
unusable performance issues, now warns loudly when it gets used, as
we no longer want to recommend its use (instead just "repack -d"
instead).
* The development community has adopted Contributor Covenant v2.0 to
update from v1.4 that we have been using.
* The support for deprecated PCRE1 library has been dropped.
* Fixes for CVE-2021-21300 in Git 2.30.2 (and earlier) is included.
https://raw.githubusercontent.com/git/git/master/Documentation/RelNotes/2.31.0.txt
OK benoit