Git clone doesn't get the new revision information from the Gitlab

Question

I am trying to integrate the Gitlab and Redmine. The following is the history of the proceedings.

1. Git clone from Redmine server

   cd /opt/git_repository/
   git clone --mirror http://userid:password@aaa.com/test.git
   cd /opt/git_repository/
   chown nginx:nginx -R test.git
   

2. Repository setting from Redmine

   • settings of ‘test’project – Repositories – new repository
     • SCM: Git
     • URL: /opt/git_repository/test.git

3. Integrations setting from Gitlab

   • Settings – Integrations
     • URL: https://aaa.com/github_hook?project_id=test
     • Secret Token: API access key of Redmine
   • Confirmed success message when I tested

I could see the revision information from http://example.com/test/repository

However, the revision information isn’t upgraded even if it is updated in Gitlab. So, I tried another integration method mentioned from How can I clone a private GitLab repository?

Still the information is not updated.

Could you help me?