git 如何创建子分支？
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How to create a sub branch?
提问by jiexishede
My git repository has two branches, masterand bug. I want to create a branch bug/rep. So I run :
我的 git 存储库有两个分支，master和bug. 我想创建一个分支bug/rep。所以我运行：
git branch bug/rep
This gives the error:
这给出了错误：
error: unable to resolve reference refs/heads/bug/rep: Not a directory fatal: Cannot lock the ref 'refs/heads/bug/rep'.
错误：无法解析引用 refs/heads/bug/rep：不是目录致命：无法锁定引用“refs/heads/bug/rep”。
How can I create a sub branch from the bugbranch, like bug/rep?
My git version is 2.3.2 on the Mac.
如何从bug分支创建子分支，例如bug/rep？我的 git 版本在 Mac 上是 2.3.2。
回答by Daniel Kessler
In git, branches correspond to actual files in a hierarchy in the .gitsubdirectory. If you create a branch named bug/sub, git will first create a folder .git/refs/heads/bug(if it doesn't already exist) and within that folder it will create a file named subwhich is the branch. Branch names are presumed to resolve within .git/refs/heads, so refs/heads+ bug/subresolves to a real place in the file system.
在 git 中，分支对应于.git子目录中层次结构中的实际文件。如果您创建一个名为 的分支bug/sub，git 将首先创建一个文件夹.git/refs/heads/bug（如果它尚不存在），然后在该文件夹中创建一个名为sub该分支的文件。假定分支名称在 内解析.git/refs/heads，因此refs/heads+bug/sub解析到文件系统中的真实位置。
The trouble that you're encountering comes from your file system. Since you already have a branch called bug, in .git/refs/headsthere is alreadya file named bug. Creating the sub branch as outlined above would require the file system to create a new folder named bug, but it can't because there is already a file there named bug.
您遇到的问题来自您的文件系统。由于您已经有一个名为 的分支bug，.git/refs/heads因此其中已经有一个名为bug. 如上所述创建子分支需要文件系统创建一个名为 的新文件夹bug，但它不能，因为那里已经有一个名为bug.
In brief, you're free to create a hierarchy of branches, but higher-level nodes of your hierarchy can't be branches in their own right.
简而言之，您可以自由创建分支层次结构，但是层次结构的更高级别节点本身不能成为分支。
回答by Rkmr039
for creating a new sub branch git checkout -b <sub-branch-name>
// sub branch will automatically created at the time of push
for pushing file on sub branch created earlier git push -u origin <sub-branch-name>-u for setting upstream parameter
用于创建新的子分支git checkout -b <sub-branch-name>
// 子分支会在推送时自动创建
用于推送先前创建的子分支上的文件git push -u origin <sub-branch-name>-u 用于设置上游参数
here origin is the master branch, added with
这里 origin 是 master 分支，添加了
git add remote origin master https://github.com/<ur-name>/repoName.git
checkout the name of branches
签出分支名称
git branch
