产生报错：
(base) ➜ git:(master) ✗ git push
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
It is also possible that a host key has just been changed.
The fingerprint for the ECDSA key sent by the remote host is
SHA256:LDuDoXBG9Nky4cRdshyAawFHnxCKAzIX+tR5bcCcqZE.
Please contact your system administrator.
Add correct host key in /Users/guoyanan/.ssh/known_hosts to get rid of this message.
Offending ECDSA key in /Users/guoyanan/.ssh/known_hosts:8
ECDSA host key for gitlab.ifchange.com has changed and you have requested strict checking.
Host key verification failed.
fatal: Could not read from remote repository.
Please make sure you have the correct access rights
and the repository exists.
解决：
- 删除known_hosts 文件中有当前ip的那一行：
$ ssh-keygen -R gitlab.ifchange.com
# Host gitlab.ifchange.com found: line 8
/Users/guoyanan/.ssh/known_hosts updated.
Original contents retained as /Users/guoyanan/.ssh/known_hosts.old
- 重新push，成功
解决方案参考：How can i get rid of " WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! "
创建分支：
git branch [name]
切换分支：
git checkout [name]
来源：CSDN
作者：爾莎
链接：https://blog.csdn.net/Guo_ya_nan/article/details/103580461