Ansible find files only if contains particular string

I need a small help in writing an ansible playbook. I have written the below till now which is listing all files with config basically. but I need to filter out the files which are basically .git/config

- hosts: all
  connection: local
  gather_facts: no
  tasks:

  - name: "Serching old git URL"
    become: true
    become_user: root
    find:
      paths: builds
      file_type: file
      recurse: yes
      patterns:
        - config$
      use_regex: true
      contains: 'atlgit-01.us.manh.com'

    register: configfiles
  - debug:
      msg: "{{configfiles.files | map(attribute='path')| list }}"

Below is the 0utput

"/builds/v2020/app/db-upgradesetup-to/.git/config",
"/builds/v2020/app/db-upgradesetup-to/environments/configure/configureEnv.xml",
"/builds/v2020/app/db-upgradesetup-from/.git/config",
"/builds/v2020/app/db-upgradesetup-from/environments/configure/configureEnv.xml",
"/builds/v2020/app/db-upgradesetup-from/ui/help/Content/Resources/images/config.gif",
"/builds/v2020/app/db-upgradesetup-from/ui/help/Content/Resources/images/configure_button.gif",
"/builds/v2020/CI/source/dockerqa/.git/config",
"/builds/v2020/CI/source/docker_ci/.git/config",
"/builds/v2020/escrow/.git/config"

Thanks you for the help