将git项目提交到其他的git仓库

1. 一般想法

git push https://gitee.com/xxx.git

2. 提示--set-upstream

 git push --set-upstream https://gitee.com/xxx.git master

3. 报错

 ! [rejected]        master -> master (non-fast-forward)
error: failed to push some refs to 'https://gitee.com/xxx.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.
 * branch            master     -> FETCH_HEAD
fatal: refusing to merge unrelated histories

4. 解决办法

git pull https://gitee.com/xxx.git master --allow-unrelated-histories

5. 提交

git push https://gitee.com/xxx.git master

6. 补充（git pull 和git fetch的区别）：