fix ansible-lint errors

roles/matrix-base/tasks/setup_matrix_base.yml

@@ -22,10 +22,11 @@
 - name: Save current git-repo status on the target to aid with restoring in case of problems
   when: "matrix_playbook_commit_hash_preservation_enabled|bool"
   block:
-    - name: Get local git hash
+    - name: Get local git hash # noqa command-instead-of-module
       delegate_to: 127.0.0.1
       become: false
       register: git_describe
+      changed_when: false
       ansible.builtin.shell:
         git describe
             --always