Martin von Zweigbergk e6693d0f68 backend: let backend choose root change id ... Our internal backend at Google uses a 32-byte change id, so I'd like to make the backend able to decide the length. To start with, let's make the backend able to decide what the root change id should be. That's consistent with how we already let the backend decide what the root commit id should be.		2023-02-07 22:31:34 -08:00
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main.rs	backend: let backend choose root change id	2023-02-07 22:31:34 -08:00