解决方法: 创建新的分支,更改 ->同步->推送。
选中新创建的分支luelue(略略略),然后重复相同操作,在github页面上merge一下就行了。
VS2019 github push失败: Updates were rejected because the tip of your current branch is behind
原文：https://www.cnblogs.com/greenaway07/p/12584195.html
