Updates were rejected because the tip of your current branch is behind

最近本地一个flutter项目因为当时使用可视化创建的时候出了一些问题，但是起初没有注意，后来因为需要新增一个语音插件，需要修改原生android MainActivity.java，才发现这个目录根本不存在，于是重新创建一个项目将原来那个项目文件拷入，等修改好后再使用git 连接原来那个项目的github仓库进行代码推送，发现老是提示如下错误

	$ git push -u origin master
	To https://github.com/dengxiaoning/flutter-trip.git
	 ! [rejected]        master -> master (non-fast-forward)
	error: failed to push some refs to 'https://github.com/dengxiaoning/flutter-trip.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.

然后又使用pull 仓库代码拉取合并，但是推送任然失败，看有朋友说需要 增加 -f 进行强制拉取，但是试过也没用，最后反过来想来过强制推送看得行不

	$ git push -f origin master
	Counting objects: 173, done.
	Delta compression using up to 4 threads.
	Compressing objects: 100% (130/130), done.
	Writing objects: 100% (173/173), 1.66 MiB | 5.73 MiB/s, done.
	Total 173 (delta 9), reused 38 (delta 4)
	remote: Resolving deltas: 100% (9/9), done.
	To https://github.com/dengxiaoning/flutter-trip.git
	 + d137bd8...0208d12 master -> master (forced update)

一试咦还OK了，不错记录记录。

【注意】在协调时慎用，该参数-f会使用本地项目完全替换掉原仓库的项目，如果本地项目不能保证比远程仓库的完整切勿使用，否则追悔莫及

看看官方介绍

	-f--force
	Usually, the command refuses to update a remote ref that is not an ancestor of the local ref used to overwrite it. Also, when --force-with-lease option is used, the command refuses to update a remote ref whose current value does not match what is expected.

	This flag disables these checks, and can cause the remote repository to lose commits; use it with care.

	Note that --force applies to all the refs that are pushed, hence using it with push.default set to matching or with multiple push destinations configured with remote.*.push may overwrite refs other than the current branch (including local refs that are strictly behind their remote counterpart). To force a push to only one branch, use a + in front of the refspec to push (e.g git push origin +master to force a push to the master branch). See the <refspec>... section above for details.