问题
在 git仓库中新建了一个仓库，想要把本地的工程目录推送上去：
1 | git init |
添加远程 git仓库：
1 | git remote add origin https://<access_token>@github.com/sakishum/xxx.git |
推送到远程仓库：
1 | git push origin main |
提示错误：
1 | git push -u origin main |
按照提示先拉取更新，但提示报错：
1 | git pull origin main |
解决方法
在拉取分支时使用以下命令：
1 | git pull origin main --allow-unrelated-histories |
之后在执行：
1 | git push origin main |
原因
对此问题，官方的解释如下：
By default, git merge command refuses to merge histories that do not share a common ancestor. This option can be used to override this safety when merging histories of two projects that started their lives independently. As that is a very rare occasion, no configuration variable to enable this by default exists and will not be added.
以上。