Git的一个小问题

最近使用git命令将本地仓库的代码推送到GitHub时，出现以下问题：

To https://github.com/xxxx/git.git

! [rejected]        dev -> dev (non-fast-forward)

error: failed to push some refs to 'https://github.com/xxxx/git.git'

hint: Updates were rejected because the tip of your current branch is behind

hint: its remote counterpart. Integrate the remote changes (e.g.

hint: 'git pull ...') before pushing again.

hint: See the 'Note about fast-forwards' in 'git push --help' for details.

使用以下方法解决该问题（根据提示再push之前，应该先使用pull命令）：

git fetch origin

git merge origin dev

git pull origin dev

git push origin dev