Git maintainers weigh Git 3.0 switch to SHA-256 and reftable defaults

Git maintainers are considering whether the release after Git 2.56 should become Git 3.0, introducing compatibility changes that would affect repository creation and software builds. Proposed defaults include SHA-256 object identifiers instead of SHA-1, reftable storage for branches and tags, lowercase-only object IDs, and a mandatory Rust compiler. GitLab and Forgejo support SHA-256 repositories, while GitHub support remained unresolved in the report. Maintainer Junio Hamano has not announced a decision, and existing SHA-1 repositories and repositories without reftables would remain supported.