1.报错
error: failed to push some refs to ‘http://xxx/backend.git’
hint: Updates were rejected because a pushed branch tip is behind its remote
hint: counterpart. Check out this branch and 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.
解决办法：
第一步：git pull --rebase origin master
第二步：git rebase --continue
第三步：git push origin master / git push -u origin master
