Reproduction steps

Build a program that expects that all versions >= 1.8.2 will have the pre-1.8.0 constness of git_commit_create and friends.

See horizon-eda/horizon@3b6b783

Expected behavior

Build passes.

Actual behavior

Build fails: https://github.com/horizon-eda/horizon/actions/runs/11576015213/job/32223990024?pr=789

Version of libgit2 (release number or SHA1)

1.8.3

Operating system(s) tested

Arch Linux