SHA-256

[lorenzleutgeb]

Consider the improvements regarding support for SHA-256 in Git, last mentioned in the release notes for version 2.45:

• https://github.com/git/git/blob/master/Documentation/RelNotes/2.45.0.txt
• https://github.blog/open-source/git/highlights-from-git-2-45/

libgit2 has experimental support for SHA-256, guarded by -DEXPERIMENTAL_SHA256.

There is a reference to this in git2-rs:

git2-rs/libgit2-sys/lib.rs

Line 1174 in abbd64e

// SHA256 is still experimental so we are not going to enable it.

It might be useful to allow users explore SHA-256 compatibility with git2-rs, probably behind a feature flag.

[extrawurst]

With libgit2 1.9.0 it was announced that 2.0.0 will be ABI breaking and making SHA256 support default