git：重命名本地分支失败
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git: rename local branch failed
提问by Shang Wang
I don't know why my attempt of renaming local branch failed. I basically cloned the project, then I also have a submodule within the project, and I downloaded the submodule code as well. However, when I use git branchwithin the submodule, I have:
我不知道为什么我重命名本地分支的尝试失败了。我基本上克隆了项目，然后我在项目中也有一个子模块，我也下载了子模块代码。但是，当我git branch在子模块中使用时，我有：
* (no branch)
master
The code looks like I'm on another branch but the output shows that it doesn't have a name. Then I searched online to find how to rename local branch and I got this:
代码看起来像我在另一个分支上，但输出显示它没有名称。然后我在网上搜索找到如何重命名本地分支，我得到了这个：
git branch -m <newname>
After I run this command git gave me this error:
运行此命令后，git 给了我这个错误：
error: refname refs/heads/HEAD not found
fatal: Branch rename failed
Anybody know why this happens? Thanks.
有人知道为什么会这样吗？谢谢。
回答by knittl
You are currently in detached head state. You must checkout a new branch to associate it with the current commit:
您目前处于超脱头部状态。您必须签出一个新分支以将其与当前提交相关联：
git checkout -b new_branch
回答by Svend Hansen
My guess is that you're not on a branch named "(no branch)", but rather not on a branch.
我的猜测是您不在名为“（无分支）”的分支上，而是不在分支上。
If you first checkout master:
如果你第一次结帐大师：
git checkout master
and then create a new branch:
然后创建一个新分支：
git checkout -b new_branch
that would make it look like you'd expect.
那会让它看起来像你期望的那样。
