关于git上传到远程仓库-- 报错! [rejected] master -> master (non-fast-forward)

git上传到远程仓库报错

描述: 在远程仓库中创建了test_code 的project, 把本地的代码想要上传到test_code 的project下面.
过程:在本地的code文件夹下面执行: 
git init; 
git add ./;
git remote add origin ssh://[email protected]:xxxx/data-group/ct.git 
git commit -m 'description information';
git push origin master;
返回结果报错:

To ssh://code.infervision.com:2022/data-group/ct.git
 ! [rejected]        master -> master (non-fast-forward)
error: failed to push some refs to 'ssh://[email protected]:2022/data-group/ct.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.

解决办法:
执行 git pull origin master --allow-unrelated-histories 把远程仓库和本地的仓库消除差异
git pull origin master
git push origin master
执行成功! code上传到远程仓库
完毕.