问题描述
我知道本地分支机构可以跟踪远程分支机构，但是本地分支机构也有可能跟踪另一个本地分支机构.一个用例是什么?
I know that local branches can track remote branches, but there is also the possibility that a local branch tracks another local branch. What is a use-case for this?
推荐答案
实际用途:
我有一个上游存储库，还有一个跟踪该远程服务器的本地分支.我开始研究一个主要的功能"，这将需要进行一堆更改才能实现，但是我还不想在上游(可能永远)公开这项工作.
I have an upstream repository, and a local branch tracking that remote. I start working on a major "feature" which will require a mess of changes to implement, but I don't yet want to expose the work upstream (potentially, ever).
因此，我创建了一个跟踪我的跟踪分支的本地分支.现在，我有 origin/master ， master 跟踪它和 feature 跟踪 master .因此，每当更新 origin/master 时，我都可以保持 origin/master 为最新，然后在本地 master .
So I create a local branch tracking my tracking branch. Now I have origin/master, master tracking that, and feature tracking master. So whenever origin/master is updated, I can keep origin/master up to date, and then apply my feature-specific changes on top of any uncommitted changes in the local master.
功能不直接跟踪 origin/master 的原因是它可能取决于本地 master 分支中的工作尚未承诺，但还不足以保证其自己的功能分支.
The reason why feature isn't directly tracking origin/master is that it may depend on work in the local master branch which isn't yet committed but isn't major enough to warrant its own feature branch.
这对于多个独立功能也很有用- basefeature 跟踪 master ，而 subfeature 跟踪 basefeature .
This could also be useful for multiple independent features - basefeature tracks master, and subfeature tracks basefeature.
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