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When you push to the server, sometimes there will be a rejected – non fast forward error. This is because the code of the pull has changed at the remote end. At this time, you need to merge the changes at the remote end into the local before submitting again

Reference: https://blog.csdn.net/chenshun123/article/details/46756087

Here’s the solution:

1> Open git repositories and make sure that you can see the project to be submitted in the working directory

2> In remotes, you can see the remote branch. The green arrow icon to the left under the branch represents fetch. Right click – > Configure Fetch

3> Confirm that the URI and ref mappings are correct, click save and fetch, and then you can see the fetch results branch together. Click OK

4> At this time, you should see that there is a remote branch in remote tracking in branches

5> Right click master in local in branches and select merge

6. Select origin/Master in remote tracking and click merge

7. This is the feedback result of the merge, after which you can submit the code again