On Tue, Jun 16, 2020 at 10:31:07AM -0400, Jeff King wrote: > > My biggest concern here was trying to understand what could break. > Having read the patches from Johannes and thought about it a lot, I have > a pretty good handle on where Git itself cares about the name. And I > feel pretty confident that we can make the change in a way that won't > cause problems there (and in fact, I think some of the code will be > made more robust by relying on HEAD more appropriately). > > There's a more open question of what _else_ will break in the ecosystem. What if we work on making this configurable for now, but stick with the legacy name until we introduce breaking sha1 changes? Almost everything will need to retool for those anyway (and all documentation rewritten), so it is reasonable to bundle these changes to happen at the same time. -K