There's a closed pull request on the void-packages repository

[NOMERGE] libgit2: update to 1.1.0.
https://github.com/void-linux/void-packages/pull/28456

Description:
Latest release from October, 2020, but it had some regressions regarding unaligned access, which I believe affect us.

See https://github.com/libgit2/libgit2/issues/5745

PR is open so hopefully anyone who searches for it is aware that it's not fully working right now. We could backport the specific patch for that issue, but I don't fully fancy it.

@q66 since your name is here :P