我通过编写一个Gitlab服务器钩子来解决这个问题，如下所示，用于ALL REPOSITORIES（查看发布的官方指南链接）：

#!/bin/sh

# https://docs.gitlab.com/ee/administration/server_hooks.html#create-a-server-hook-for-a-repository

# Encode path slashes with dots.

FIXED_PROJECT_PATH=$(echo ${GL_PROJECT_PATH} | sed -r 's:/:\.:g')

# Mirror the repository, even if does not yet exist.

PROJECT_URI=<<GITLAB_MIRROR_URL>>/${FIXED_PROJECT_PATH}.git

git push --mirror ${PROJECT_URI}
exit 0 # Force successfully execution

**注意：**记得用您自己的<<GITLAB_MIRROR_URL>>替换。

你可以使用GitLab的mirroring功能来实现这一点，它是内置在平台中的。