gh-issue-close - Close issue
gh issue close {<number> | <url>} [flags]
-c, --comment <string>
Leave a closing comment
-r, --reason <string>
Reason for closing: {completed|not planned}
-R, --repo <[HOST/]OWNER/REPO>
Select another repository using the [HOST/]OWNER/REPO format
gh-issue(1)