git push origin master

• 错误一
  Can't Update
  No tracked branch configured for branch master or the branch doesn't exist.
  To make your branch track a remote branch call, for example,
  git branch --set-upstream-to=origin/master master (show balloon)

本地分支未跟远程分支关联

$ git branch --set-upstream-to=origin/master
#Branch 'master' set up to track remote branch 'master' from 'origin'.

• 错误二
  fatal: refusing to merge unrelated histories

由于是后执行本地分支关联远程分支，提交历史无关联，两个分支具有不同版本

#允许不同版本合并
git pull origin master --allow-unrelated-histories