當要push代碼到git時，出現提示：

error:failed to push some refs to ...

Dealing with “non-fast-forward” errors
From time to time you may encounter this error while pushing:

$?git?push?origin?master??

To?../remote/??

?!?[rejected]????????master?->?master?(non-fast?forward)??

error:?failed?to?push?some?refs?to?'../remote/'??

To prevent you from losing history, non-fast-forward updates were rejected
Merge the remote changes before pushing again. ?See the 'non-fast forward'
section of 'git push --help' for details.
This error can be a bit overwhelming at first, do not fear. Simply put, git cannot make the change on the remote without losing commits, so it refuses the push. Usually this is caused by another user pushing to the same branch. You can remedy this by fetching and merging the remote branch, or using pull to perform both at once.
In other cases this error is a result of destructive changes made locally by using commands like git commit --amend or git rebase. While you can override the remote by adding --force to the push command, you should only do so if you are absolutely certain this is what you want to do. Force-pushes can cause issues for other users that have fetched the remote branch, and is considered bad practice. When in doubt, don’t force-push.

問題（Non-fast-forward）的出現原因在于：git倉庫中已經有一部分代碼，所以它不允許你直接把你的代碼覆蓋上去。于是你有2個選擇方式：

1，強推，即利用強覆蓋方式用你本地的代碼替代git倉庫內的內容

git push -f

2，先把git的東西fetch到你本地然后merge后再push

$ git fetch

$ git merge

這2句命令等價于

$?git?pull??

可是，這時候又出現了如下的問題：

上面出現的 [branch "master"]是需要明確(.git/config)如下的內容
[branch "master"]
? ? remote = origin

? ? merge = refs/heads/master

這等于告訴git2件事:

1，當你處于master branch, 默認的remote就是origin。

2，當你在master branch上使用git pull時，沒有指定remote和branch，那么git就會采用默認的remote（也就是origin）來merge在master branch上所有的改變

如果不想或者不會編輯config文件的話，可以在bush上輸入如下命令行：

$?git?config?branch.master.remote?origin??

$?git?config?branch.master.merge?refs/heads/master??

之后再重新git pull下。最后git push你的代碼吧。it works now~

轉載于:https://my.oschina.net/liangzhenghui/blog/505861

總結

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