Is there a way to query for issue comments that have been updated since a timestamp?

[jyasskin]

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If you run

query BugQuery($since: DateTime) {
  repository(owner: "jyasskin", name: "test-design-reviews") {
    issues(filterBy: {since: $since}, first: 1) {
      nodes {
        url
        updatedAt
        comments(orderBy: {field: UPDATED_AT, direction: DESC}, first: 20) {
          nodes {
            publishedAt
            updatedAt
          }
        }
        timelineItems(since: $since, first: 20, itemTypes: [ISSUE_COMMENT]) {
          nodes {
            ... on IssueComment {
              publishedAt
              updatedAt
            }
          }
        }
      }
    }
  }
}

with

{"since": "2024-11-16T19:29:23Z"}

you get

{
  "data": {
    "repository": {
      "issues": {
        "nodes": [
          {
            "url": "https://github.com/jyasskin/test-design-reviews/issues/8",
            "updatedAt": "2024-11-16T19:30:45Z",
            "comments": {
              "nodes": [
                {
                  "publishedAt": "2024-11-16T19:29:21Z",
                  "updatedAt": "2024-11-16T19:30:45Z"
                }
              ]
            },
            "timelineItems": {
              "nodes": []
            }
          }
        ]
      }
    }
  }
}

That is, there's a comment that was created before the $since value and updated after it. That update changed the updatedAt time for both the comment and its surrounding issue, but the since filter looks in the issue's updated time but looks in the comment's created time. Is there a filter I'm missing that would find just the updated comments?

My current best guess is to sort the comments in descending order by updated time, and write manual pagination code to stop once they go below the $since value. Is there a better way to do this that won't get up to an extra page of comments for each issue?