1. 这里提供一种基于同步git代码的迁移方案

• 先clone出老的responsity的代码
• 然后在拉取所有的远程分支到本地
• 添加新的远程url
• 将代码push到新的url

2. 参考脚本

• window dos shell

@echo off

:: clone old repo
git clone old_url

:: 如果clone出来的代码根目录是repo_dir
cd repo_dir

:: fetch all remote branches

git branch -r | findstr /v ">" > tmp.log

set targe=''
setlocal enabledelayedexpansion
for /f   %%i in (tmp.log)  do (
set remote=%%i
set var=!remote:origin/=!
echo "!var!"
git branch --track !var! !remote!
) 

git fetch --all
git pull --all

git remote rename origin old-origin
git remote add origin new_url

git push -u origin --all
git push -u origin --tags


:: del tmp data
del ..\\tmp.log

echo "migrate finish!"

pause

• linux bash shell

#!/bin/bash

# clone old repo
git clone old_url

# 如果clone出来的代码根目录是repo_dir
cd repo_dir

# fetch all remote branches
git branch -r | grep -v '\->' | while read remote; do git branch --track "${remote#origin/}" "$remote"; done
git fetch --all
git pull --all

git remote rename origin old-origin
git remote add origin new_url

git push -u origin --all
git push -u origin --tags

echo "migrate finish!"