refusing to merge unrelated histories

 使用git合并两个不同项目时报如下错

$ git pull https://gitee.com/pardon110/Laravel_Vue_GraphQL.git master
From https://gitee.com/pardon110/Laravel_Vue_GraphQL
 * branch            master     -> FETCH_HEAD
fatal: refusing to merge unrelated histories

查看了相关文档，需要加上配置项， --allow-unrelated-histories

$ git pull https://gitee.com/pardon110/Laravel_Vue_GraphQL.git master --allow-unrelated-histories
From https://gitee.com/pardon110/Laravel_Vue_GraphQL
 * branch            master     -> FETCH_HEAD
Merge made by the 'recursive' strategy.
 LICENSE   | 191 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 README.md |  37 ++++++++++++
 2 files changed, 228 insertions(+)
 create mode 100644 LICENSE
 create mode 100644 README.md

查看，将远程的master分支成功合并到本地分支

Administrator@PC-20141122KRMZ MINGW64 /d/laragon323/www/lar55 (lar55_api_graphQL)
$ head README.md
# Laravel_Vue_GraphQL

#### 项目介绍
采用laravel框架graphql实现 api数据驱动

#### 软件架构
软件架构说明


#### 安装教程