docs/data/reusables/webhooks/check_suite_properties.md

Key	Type	Description
action	string	The action performed. Can be: completed - All check runs in a check suite have completed. requested - Occurs when new code is pushed to the app's repository. When you receive the requested action events, you'll need to create a new check run. rerequested - Occurs when someone requests to re-run the entire check suite from the pull request UI. When you receive the rerequested action events, you'll need to create a new check run. See "About status checks" for more details about the GitHub UI.
check_suite	object	The check_suite.
check_suite[head_branch]	string	The head branch name the changes are on.
check_suite[head_sha]	string	The SHA of the most recent commit for this check suite.
check_suite[status]	string	The summary status for all check runs that are part of the check suite. Can be requested, in_progress, or completed.
check_suite[conclusion]	string	The summary conclusion for all check runs that are part of the check suite. Can be one of success, failure, neutral, cancelled, timed_out, {% ifversion fpt or ghes or ghae or ghec %}action_required or stale{% else %}or action_required{% endif %}. This value will be null until the check run has completed.
check_suite[url]	string	URL that points to the check suite API resource.
check_suite[pull_requests]	array	An array of pull requests that match this check suite. A pull request matches a check suite if they have the same head_sha and head_branch. When the check suite's head_branch is in a forked repository it will be null and the pull_requests array will be empty.