Git如何同步多个远程仓库
https://blog.csdn.net/L_Y_Fei/article/details/108406927
cd existing_repo
git remote rename origin old-origin
git remote add origin http://xx.xx.xx.xx/xx.git
git push -u origin --all
git push -u origin --tags
git push -u origin --all --force
git remote rm old-origin