When a new branch is pushed for the first time, origin/<branch> does
not yet exist, so the pre-push hook was falling through to treating
every directory as changed. On a wiki-only branch this meant running
Godot headless parse, cargo fmt + clippy, ruff, and validating all
2762 repo-wide JSON files — tens of seconds of churn against a diff
that had no client/server/tooling/JSON content.
Fix: try origin/<branch> first, fall back to origin/main before
giving up. The JSON validation block now uses the same REMOTE_REF
the directory-change detection settled on, so both code paths stay
consistent.
Scope note: this is CI/tooling infrastructure, not copy-team scope,
but surfaced as part of reviewing the slow push on sprint-37/copy.
Bundling here rather than a separate branch at Jeroen's direction.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
jpmschweitzerandClaude Opus 4.7
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