! [rejected] master -> master (fetch first) 【先pull 后push】

详情如下：

[email protected] MINGW64 /d/PICC/picc_server (master)
$ git push
To http://xx.xxx.xx.xxx:xxxx/xxxx/xx_server.git
! [rejected] master -> master (fetch first)
error: failed to push some refs to ‘http://xx.xxx.xx.xxx:xxxx/xxxx/xx_server.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.
[email protected] MINGW64 /d/PICC/picc_server (master)
$ git pull