Git.pm and several tests (and perhaps other things) implicitly assume the default branch for a repository is master. This is currently still the Git default, but can be overridden by a user (init.defaultBranch: try setting it and running the test suite!). We should make Git.pm more robust by settings init.defaultBranch on locally-created repos to match our assumption (or to match setup's gitmaster_branch) — Jon, 2025-02-18