pkg/vcs, syz-cluster: find base commit by blob sha hashes #6553
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Return not just the modified files, but also their blob hashes.
Add a commitChangeset() method to simplify setting up repository states in tests.
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Given a git diff, determine the latest commit where the modified files still have the exact sha hashes they had at the moment the git patch was created.
It will accelerate various commit search operations by orders of magnitude.
Before traversing the list of trees, attempt to determine the base tree/commit by looking at the SHA hashes from the supplied git diffs.
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dvyukov
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Jan 9, 2026
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tarasmadan
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Jan 9, 2026
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Given a git diff, determine the latest commit where the modified files
still have the exact sha hashes they had at the moment the git patch was
created.
Cc #6523.