gitlabRunner不适用于特定项目

我注册了GitLab运行程序的11个项目。除1个项目外，每个项目的跑步者都可以正常工作。我第一次注册该项目的执行者，它可以工作。但是在我提交/推送一些更改后，会发生错误并且作业失败。我看到一些升级git版本的解决方案可以解决问题，但是我不这么认为。因为除此项目外，所有跑步者都可以正常工作。

服务器操作系统：CentOS 7
git：1.8.3.1

First time registered runner
>Running with gitlab-runner 11.9.2 (...)
  on (...)
Using Shell executor...
Running on localhost.localdomain...
Initialized empty Git repository in /home/gitlab-runner/(...)/.git/
Clean repository
Fetching changes with git depth set to 50...
Created fresh repository.
From https://gitlab.com/(...)
 * [new branch]      master     -> origin/master
Checking out (...) as master...
Skipping Git submodules setup
$ echo "> gitlab-ci started"
> gitlab-ci started
$ cd /home/(..)
$ echo "> git pull started"
> git pull started
$ git pull
remote: Total 0 (delta 0), reused 0 (delta 0)
Already up-to-date.
Job succeeded

第二次提交/拉动，然后

>Running with gitlab-runner 11.9.2 (...)
  on (...)
Using Shell executor...
Running on localhost.localdomain...
Reinitialized existing Git repository in /home/gitlab-runner/(...)/.git/
Clean repository
Fetching changes with git depth set to 50...
fatal: remote origin already exists.
fatal: git fetch-pack: expected shallow list
ERROR: Job failed: exit status 1

编辑。这是我的.gitlab-ci.yml

stages:
- deploy

deploy_to_master:
  stage: deploy

  script:
  - echo "> gitlab-ci started"
  - cd /home/www/dir
  - echo "> git pull started"
  - git pull
  - echo "> permission set"
  - chmod 707 -R ./data/
  - chmod 707 -R ./plugin/nice/
  - chmod 707 ./favicon.ico
  - echo "> server reload(=httpd -k graceful)"
  - systemctl reload httpd

  only:
  - master

  tags:
  - tags