Stefan Beller <sbeller@xxxxxxxxxx> writes: >> Even if we limit ourselves to pointing at the index of the >> superproject, there probably are a handful of interesting issues >> that need to be clarified (not in the sense of "this and that issues >> exist, so this won't be a useful feature", but in the sense of "we'd >> be able to do these useful things using this feature, and we need to >> fill in more details"), such as: >> >> - Making new commits in the submodule available to the upstream. >> Just like a detached HEAD in the submodule, this is not tied to >> any concrete branch, and it is unclear how a recursive "push" >> from the superproject should propagate the changes to the >> upstream of the submodule; > > In Gerrit land people are trained to use > git push HEAD:refs/for/master > which would work fine when propagated to the submodule as-is. What I was alluding to is how you find 'master' in 'for/master', given the submodule HEAD which only says "I point at the index of the superproject". Note that 'master' here refers to a branch in the submodule. If we further limit ourselves and declare that a submodule that uses this external-reference as HEAD must always be on the same branch as the superproject is on, then we can find what branch the superproject is on, and use that.
