IDEA push to master was rejected

1、切换到自己项目所在的Windows目录，右键选择GIT BASH Here。

2、在terminl窗口中依次输入命令：git pullgit pull origin mastergit pull origin master --allow-unrelated-histories

3、如果出现fatal: refusing to merge unrelated histories使用： git pull origin master --allow-unrelated-histories

4、回到IDEA项目上右键先择Git->Repository->Push,再次push成功。