"CL"/"Change List" is the lingo for the Gerrit code review tool, which is how all contributions to Go happen. Creating a GitHub PR simply triggers a bot to create a Gerrit CL, which is where all discussion about the "PR" happens and where the "accept" button gets clicked.
8n4vidtmkvmk|1 month ago
tonfa|1 month ago
https://www.gerritcodereview.com/about.html