1.一开始,只有一个主分支(master),HEAD指向Master,而Master指向主分支.现在我们创建dev分支. lfy@lfy-PC MINGW64 /c/fyliu/lfyTemp/gitLocalRepository/yangjie (master) $ git checkout -b dev Switched to a new branch 'dev' lfy@lfy-PC MINGW64 /c/fyliu/lfyTemp/gitLocalRepository/yangjie (…