解决git报错：If no other git process is currently running, this probably means的方案

git执行时报错

If no other git process is currently running, this probably means a
git process crashed in this repository earlier. Make sure no other git
process is running and remove the file manually to continue.

解决方案

原因：用SourceTree提交代码，发现这个问题。好像是因为上个进程没停止，造成文件不识别

解决：把仓库目录里的.git/index.lock文件（文件是隐藏的）删除就可以了。删除index.lock不会影响Git使用。是说index文件被锁住了，但是还有一个index文件要进行操作。

cd .git 
ll

会找到index.lock文件

 rm -rf index.lock 

删除此文件即可