在Ansible中添加远程git仓库可以使用git模块中的remote参数。在已有的仓库下添加远程仓库需要使用git_config模块中的config参数。

示例代码如下：

- name: Add upstream remote to repository
  git:
    repo: /path/to/repo
    remote:
      name: upstream
      url: git@github.com:upstream/repo.git
    state: present

- name: Add upstream remote to all repositories in a directory
  find:
    paths: /path/to/repos
    patterns: .git
    recurse: yes
  register: repos

- name: Configure upstream remote for all repositories
  git_config:
    file: "{{ item.path }}/config"
    key: "remote.upstream.url"
    value: "git@github.com:upstream/repo.git"
    state: present
  loop: "{{ repos.files }}"