! [rejected] master -> master (fetch first)
error: failed to push some refs to 'https://git.up678.cn...'
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.
原因 本地或线上编辑了README.md，导致线上线上数据不一致。
解决:
合并线上代码即可
$ git pull --rebase origin master
