这几天项目中遇到一个git场景：
项目仓库保存在以下三个地方：

1. GitHub
2. GitLab
3. Coding

由于项目是我在开发维护，所以这三个仓库地址一直都是在同一个远程仓库origin下，三处代码时刻保持一致。

>>> git remote -v
origin  https://github.com/myname/project.git (fetch)
origin  https://github.com/myname/project.git (push)
origin  http://10.8.15.49:9091/myname/project.git (push)
origin  https://e.coding.net/myname/01/project.git (push)

但最近项目代码需要进行一处修改，需要同事来做，同事不会使用Git，所以就直接让他在Coding上进行修改了。但如何把他做出的修改更新到GitHub和GitLab上，使三处代码继续保持一致呢？

首先，添加新的远程仓库

>>> git remote add coding https://e.coding.net/myname/01/project.git

>>> git remote -v

coding  https://e.coding.net/myname/01/project.git (fetch)
coding  https://e.coding.net/myname/01/project.git (push)
origin  https://github.com/myname/project.git (fetch)
origin  https://github.com/myname/project.git (push)
origin  http://10.8.15.49:9091/myname/project.git (push)
origin  https://e.coding.net/myname/01/project.git (push)

>>> cat .git/config

[core]
        repositoryformatversion = 0
        filemode = true
        bare = false
        logallrefupdates = true
        ignorecase = true
        precomposeunicode = true
[remote "origin"]
        url = https://github.com/myname/project.git
        fetch = +refs/heads/*:refs/remotes/origin/*
        url = http://10.8.15.49:9091/myname/project.git
        url = https://e.coding.net/myname/01/project.git
[branch "main"]
        remote = origin
        merge = refs/heads/main
[branch "1.4"]
        remote = origin
        merge = refs/heads/1.4
[remote "coding"]
        url = https://e.coding.net/myname/01/project.git
        fetch = +refs/heads/*:refs/remotes/coding/*

可以看到已经多出coding远程仓库了

然后，使用fetch更新一下

>>> git fetch coding

remote: Enumerating objects: 14, done.
remote: Counting objects: 100% (14/14), done.
remote: Compressing objects: 100% (9/9), done.
remote: Total 9 (delta 7), reused 0 (delta 0), pack-reused 0
Unpacking objects: 100% (9/9), 810 bytes | 67.00 KiB/s, done.
From https://e.coding.net/myname/01/project
 * [new branch]      1.4        -> coding/1.4
 * [new branch]      main       -> coding/main

然后将代码合并，上传

>>> git checkout 1.4
>>> git merge coding/1.4
>>> git push origin 1.4

大功告成！！！

---

之前一直都是手动修改.git/config文件来添加删除远程仓库地址，但最近才知道git提供有专门的命令

>>> git remote set-url origin --add https://e.coding.net/myname/01/project.git

效果就是会在.git/config中的origin远程仓库下添加一个url

[core]
        repositoryformatversion = 0
        filemode = true
        bare = false
        logallrefupdates = true
        ignorecase = true
        precomposeunicode = true
[remote "origin"]
        url = https://github.com/MacwinWin/wxapp_api.git
        fetch = +refs/heads/*:refs/remotes/origin/*
        url = http://10.8.15.49:9091/gaoxiang/wxapp_api.git
        url = https://e.coding.net/xlxdsj/01/wxapp_api.git
[branch "main"]
        remote = origin
        merge = refs/heads/main
[branch "1.4"]
        remote = origin
        merge = refs/heads/1.4

参考：
https://*.com/a/12795747/7151777
https://www.jianshu.com/p/4cd46619b3a5
https://*.com/a/16608774/7151777