一、问题
在进行【git push orgin master】的时候出现如下错误

 ! [rejected]        master -> master (non-fast-forward)
error: failed to push some refs to 'https://github.com/pzq7025/KG.git'
hint: Updates were rejected because a pushed branch tip is behind its remote
hint: counterpart. Check out this branch and integrate the remote changes
hint: (e.g. 'git pull ...') before pushing again.
hint: See the 'Note about fast-forwards' in 'git push --help' for details.

二、解决
产生这个错误是由于当前版本和提交的版本较低的原因，因此使用【git push origin master -f】就可以解决这个问题。

三、结果展示

 

四、参考
https://blog.csdn.net/crazydony/article/details/51983343