git错误：error: failed to push some refs to 'https://...'

[root@foundation38 demo]# git push -u origin master
Username for 'https://github.com': xuefeilong
Password for 'https://xuefeilong@github.com': 
To https://github.com/xuefeilong/test.git
 ! [rejected]        master -> master (non-fast-forward)
error: failed to push some refs to 'https://github.com/xuefeilong/test.git'
hint: Updates were rejected because the tip of your current branch is behind
hint: its remote counterpart. Merge the remote changes (e.g. 'git pull')
hint: before pushing again.
hint: See the 'Note about fast-forwards' in 'git push --help' for details.

1: 进行push前先将远程仓库pull到本地仓库
$ git pull origin master    #git pull --rebase origin master
$ git push -u origin master

2: 强制push本地仓库到远程 (这种情况不会进行merge, 强制push后远程文件可能会丢失 不建议使用此方法)
$ git push -u origin master -f

3: 避开解决冲突, 将本地文件暂时提交到远程新建的分支中
$ git branch [name]
# 创建完branch后, 再进行push
$ git push -u origin [name]