# 克隆旧仓库
git clone --mirror https://github.com/username/old-repo.git
cd old-repo.git(cd到旧仓库镜像目录)
# 设置新仓库为远程仓库
git remote set-url origin https://github.com/username/new-repo.git
# 推送所有分支和标签到新仓库
git push --mirror
# 清理本地镜像(可选,或者直接删除文件夹)
cd ..
rm -rf old-repo.git