git添加本地分支与远程分支对应关系：
git branch --set-upstream master origin/master
git pull远程分支：
git checkout -b < new_branch > origin/< new_branch >
git删除本地分支与远程分支：
delete a local branch
git branch -d the_local_branchremove a remote branch (if you know what you are doing!)
git push origin :the_remote_branch
git显示本地与远程所有分支对应关系：
For all branches:
git branch -avvFor local branches only:
git branch -lvv
创建一个空的分支：
git checkout --orphan <branchname>
删除所有文件
git rm -rf .
git删除所有untrack文件：
git clean -f
But beware... there's no going back. Use -n or --dry-run to preview the damage you'll do.
If you want to also remove directories, run git clean -f -d
If you just want to remove ignored files, run git clean -f -X
If you want to remove ignored as well as non-ignored files, run git clean -f -x
git rename本地分支：
git branch -m <oldname> <newname>