Ansible部署时Git克隆遇公钥权限拒绝问题求助

执行Git仓库拉取操作时触发经典权限错误：

Permission denied (publickey). fatal: Could not read from remote repository. Please make sure you have the correct access rights and the repository exists.

已做排查动作：

• 私钥tp10_deploy_key已正确复制到远程机器/root/.ssh目录，匹配的公钥已配置为对应仓库的部署密钥，但手动克隆同样报错
• 尝试将GitHub上的tp_deploy_key公钥从仓库专属部署密钥改为全局认证密钥，无论Ansible还是手动操作依旧报错
• 本地与远程服务器通信正常，其他Ansible部署命令均可执行
• 测试过开启/关闭ForwardAgent配置，结果无变化

Ansible任务代码 #

- name: 'Repo does not exist'
  block:
    - name: Copy the repo to the remote server.
      git:
        repo: "{{ git_repo_url }}"
        version: "{{ git_repo_version }}"
        dest: "{{ drupal_core_path }}"
        separate_git_dir: "{{ git_bare_dir }}"
        force: yes
        single_branch: yes
        depth: 1
        accept_newhostkey: yes
        key_file: "{{ github_deploy_key }}"
      register: code_uploaded
  when:
    - not repo_dir.stat.exists

调试信息 #

"changed": false,
"cmd": "/usr/bin/git ls-remote git@github.com:xxx/xxx.git -h refs/heads/master",
"invocation": {
    "module_args": {
        "accept_hostkey": false,
        "accept_newhostkey": true,
        "archive": null,
        "archive_prefix": null,
        "bare": false,
        "clone": true,
        "depth": 1,
        "dest": "/var/www",
        "executable": null,
        "force": true,
        "gpg_whitelist": [],
        "key_file": "/root/.ssh/tp10_deploy_key",
        "recursive": true,
        "reference": null,
        "refspec": null,
        "remote": "origin",
        "repo": "git@github.com:xxx/xxx.git",
        "separate_git_dir": "/root/tp10",
        "single_branch": true,
        "ssh_opts": null,
        "track_submodules": false,
        "umask": null,
        "update": true,
        "verify_commit": false,
        "version": "master"
    }
},

ansible.cfg配置 #

ssh_args = -C -o ControlMaster=auto -o ControlPersist=60s -o StrictHostKeyChecking=no -o ForwardAgent=yes

补充环境信息：

• 部署目标：DigitalOcean Ubuntu 20.04 droplet
• 本地开发环境：Ubuntu 20.04虚拟机

内容的提问来源于stack exchange，提问作者Adaddinsane