fix(416): docs-only skip never fired — detect against FETCH_HEAD (shallow-checkout safe) #429

Merged
timothy merged 2 commits from fix/416-shallow-detect into main 2026-07-17 22:39:05 +02:00
2 Commits
Author SHA1 Message Date
timothy 082124f706 docs(416): note shallow-checkout FETCH_HEAD/two-dot fix (ci-cd + decisions)
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Refs #416
2026-07-17 22:02:06 +02:00
timothy 74005cc952 fix(416): detect against FETCH_HEAD with a two-dot diff (shallow-checkout safe)
Build ErsatzTV Image / CI image pin matches docker/ci (pull_request) Successful in 7s
Build ErsatzTV Image / Docs update reminder (pull_request) Successful in 7s
Build ErsatzTV Image / decisions.md append-only (pull_request) Successful in 7s
Build ErsatzTV Image / Build & test (.NET) (pull_request) Successful in 7m39s
Build ErsatzTV Image / API docs in sync (OpenAPI + endpoint index) (pull_request) Successful in 15s
Build ErsatzTV Image / Formatting (changed .cs conform to .editorconfig) (pull_request) Successful in 14s
Build ErsatzTV Image / EF migration integrity (SQLite + MySql) (pull_request) Successful in 5m54s
Build ErsatzTV Image / Functional E2E (curl contracts) (pull_request) Successful in 14m27s
Build ErsatzTV Image / Build & push image (amd64) (pull_request) Has been skipped
The test/migrations jobs check out fetch-depth:1. A shallow clone has NO
origin/<base> tracking ref and no merge-base, so the three-dot
origin/main...HEAD errored -> empty diff -> docs_only=false -> EVERY docs-only PR
silently ran the full matrix (safe but the skip never fired). git fetch always
writes FETCH_HEAD, which resolves in a shallow clone; diff against it with a
two-dot tree diff (no merge-base). Confirmed in a real shallow file:// clone:
origin/main did NOT resolve and three-dot errored, while FETCH_HEAD two-dot
correctly returned the docs file. api-docs/format were unaffected only because
they use fetch-depth:0.

Refs #416
2026-07-17 21:33:53 +02:00