This is usually caused by another repository pushing hint: to the same ref.

BUG信息及解决办法

C:\Users\Administrator\WebstormProjects\VueElementUiAdmin-master>git push -u origin master
To gitee.com:duanminjie/ElmTestPre.git
 ! [rejected]        master -> master (fetch first)
error: failed to push some refs to 'gitee.com:duanminjie/ElmTestPre.git'
hint: Updates were rejected because the remote contains work that you do
hint: not have locally. This is usually caused by another repository pushing
hint: to the same ref. You may want to first integrate the remote changes
hint: (e.g., 'git pull ...') before pushing again.
hint: See the 'Note about fast-forwards' in 'git push --help' for details.
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就使用这个

git pull origin master --allow-unrelated-histories
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然后再使用

git push -u origin master
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解决过程