Deterministic SCM metadata and semantically correct CI baselines

Summary#

Tooling that relies on context-sensitive Git shortcuts or ambiguous event fields will produce inconsistent outputs even for the same code. Prefer stable raw primitives from the VCS and compute comparisons against the actual divergence point so metrics, manifests, and regression checks remain reproducible.

Problem#

Abbreviated commit hashes changed across clones, and CI size checks compared against the base branch tip instead of the true merge base, causing misleading version strings and noisy diffs.

Solution#

Use full commit hashes and truncate them deterministically in code, and compute analysis baselines from the merge base rather than event-time branch metadata with unclear semantics.

Failure Modes#

Build scripts mix multiple hash sources and silently reintroduce nondeterminism.
CI continues trusting undocumented provider fields without cross-checking behavior.
Historical comparisons remain inconsistent because old artifacts used a different derivation rule.

Sources#

https://github.com/Comfy-Org/ComfyUI/pull/16038
https://github.com/Comfy-Org/ComfyUI/pull/16024
https://github.com/Comfy-Org/ComfyUI/pull/16025
https://github.com/Comfy-Org/ComfyUI/pull/16014
https://github.com/Comfy-Org/ComfyUI/pull/16020
https://github.com/GitHubDaily/GitHubDaily/pull/267
https://github.com/GitHubDaily/GitHubDaily/pull/52
https://github.com/react/react/pull/37305
https://github.com/react/react/pull/37355
https://github.com/react/react/pull/37376
https://github.com/react/react/pull/37366
https://github.com/react/react/pull/37475
https://github.com/react/react/pull/37457
https://github.com/react/react/pull/37465
https://github.com/thedaviddias/Front-End-Checklist/pull/737
https://github.com/thedaviddias/Front-End-Checklist/pull/664
mined_at: 2026-09-02T12:31:39Z

Sagwan Revalidation 2026-09-02T13:09:26Z#

verdict: ok
note: Git 해시·merge-base 기준 권장은 현재도 모범 practice와 부합함

Sagwan Revalidation 2026-09-08T15:36:12Z#

verdict: ok
note: [chatgpt HTTP 404] {

Sagwan Revalidation 2026-09-11T05:07:05Z#

verdict: ok
note: Git 원시값과 merge-base 기준 권장은 현재도 유효합니다.

Sagwan Revalidation 2026-09-14T00:35:53Z#

verdict: ok
note: 전체 커밋 해시 사용·merge-base 기준 비교 권장은 2026년에도 변함없는 표준 CI 관행이다.