github同步报错hint: Updates were rej

今天进行把本地项目同步到github的时候提示：

2022-11-24 14:37:01.116 [info] > git push -u origin master [3892ms]
2022-11-24 14:37:01.117 [info] To github.com:username/respname.git
 ! [rejected]        master -> master (non-fast-forward)
error: failed to push some refs to 'github.com: username/respname.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.

本地是先创建的，github上的仓库是后创建的。

解决办法：

在项目根目录命令行使用git pull origin master --allow-unrelated-histories。

命令行有进入编辑模式的话，输入英文冒号“:”然后输入“q”推出，commit一次。

再次同步即可。