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Ask HN: What is `PiperOrigin-RevId` in Google commits?

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Re: Ask HN: What is `PiperOrigin-RevId` in Google commits?

#2
"Piper" is the custom version control tooling Google uses for their central repository, so this might be a reference added when commits are exported to git repositories.

(reference for Piper being the name of the system: https://cacm.acm.org/magazines/2016/7/204032-why-google-stor... )