git本地提交到远程仓库报错error: failed to push some refs to

今天在本地新建了个项目，在码云上也建了个仓库，想从本地推送到码云，但是git push -u origin master，报错：

 ! [rejected]        master -> master (fetch first)
error: failed to push some refs to 'https://gitee.com/xxx/app.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.

查找后，使用：git pull --rebase origin master 解决
rebase与merge区别:

rebase 会把你当前分支的 commit 放到公共分支的最后面,所以叫变基。
merge 会把公共分支和你当前的commit 合并在一起，形成一个新的 commit 提交