roles/git-use-previous-commit/tasks/main.yaml

- name: Prepare git submodules
  shell: |
    PREVIOUS_BRANCH=$(git rev-parse --abbrev-ref HEAD)
    echo "{{ item.key }}: ${PREVIOUS_BRANCH}"
    git checkout -b zuul_origin_${PREVIOUS_BRANCH} origin/${PREVIOUS_BRANCH}
  args:
    chdir: "{{ ansible_user_dir }}/{{ item.value.src_dir }}"
  loop: "{{ query('dict', zuul.projects) }}"