How do I update a value and add a comment at the same time?

[andrewimeson]

Hello,

I have this (simplified) pre-commit file in a bunch of places with a bunch of variations that I need to update.

---
# See https://pre-commit.com/hooks.html for more hooks
repos:
  - repo: https://github.com/pre-commit/pre-commit-hooks
    rev: v4.3.0
    hooks:
      - id: trailing-whitespace
  - repo: https://github.com/lyz-code/yamlfix
    rev: 1.9.0
    hooks:
      - id: yamlfix
  - repo: https://github.com/scop/pre-commit-shfmt
    rev: v3.5.1-1
    hooks:
      - id: shfmt

I need to set the revision for yamlfix to 1.3.1 and also add a comment above mentioning why it's pinned at that version

---
# See https://pre-commit.com/hooks.html for more hooks
repos:
  - repo: https://github.com/pre-commit/pre-commit-hooks
    rev: v4.3.0
    hooks:
      - id: trailing-whitespace
  - repo: https://github.com/lyz-code/yamlfix
    # blah blah
    rev: 1.3.1
    hooks:
      - id: yamlfix
  - repo: https://github.com/scop/pre-commit-shfmt
    rev: v3.5.1-1
    hooks:
      - id: shfmt

The exact placement of the comment isn't critical, I just want it somewhere around the yamlfix dictionary.

I can update the value successfully with

yq -i '
(.repos.[]
  | select(.repo == "*yamlfix")
  | .rev
) = "1.3.1"
' .pre-commit-config.yaml

But I can't seem to find a way to set head_comment. One way I attempted to ended up with the rev of all items being updated

yq -i '
(.repos.[]
  | select(.repo == "*yamlfix") head_comment="blah blah"
  | .rev
) = "1.3.1"
' .pre-commit-config.yaml

---
# See https://pre-commit.com/hooks.html for more hooks
repos:
  - repo: https://github.com/pre-commit/pre-commit-hooks
    rev: 1.3.1
    hooks:
      - id: trailing-whitespace
  # blah blah
  - repo: https://github.com/lyz-code/yamlfix
    # blah blah
    rev: 1.3.1
    hooks:
      - id: yamlfix
  - repo: https://github.com/scop/pre-commit-shfmt
    rev: 1.3.1
    hooks:
      - id: shfmt