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tools: limit format-cpp checkout history - #66479
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Use the first parent of the PR merge commit as the formatting base, allowing a depth-two checkout instead of fetching the full history. Assisted-by: Codex Signed-off-by: inoway46 <inoueyuya416@gmail.com>
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Use the first parent of the PR merge commit as the formatting base, allowing a depth-two checkout instead of fetching the full history. Assisted-by: Codex Signed-off-by: inoway46 <inoueyuya416@gmail.com> PR-URL: #66479 Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com> Reviewed-By: Darshan Sen <raisinten@gmail.com>
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Fetch only two levels of history for
format-cppand use the PR merge commit's first parent as the formatting base.In 128 trials per variant on the same merge commit, average checkout time fell from 160.12s to 19.95s. Both variants produced identical bases and diffs.
ubuntu-slim(before)ubuntu-slim(after)Benchmark:
full= before,shallow= after.Refs: #64972 (comment)