Lock the "master" branch of https://github.com/eclipse-sisu/sisu-project

Summary

Help needed with Otterdog. I'd like to make "master" (old default) branch of https://github.com/eclipse-sisu/sisu-project read-only. As I see, it is doable with "branch protection rule", but unsure about exact syntax, nor I found any example of this.

Priority

• Urgent
• High
• Medium
• Low

Severity

• Blocker
• Major
• Normal
• Low

Impact

Just want to prevent ANY (unintended) modification of this branch, as it used to be default branch, but after consolidation the default branch is "main". Still, many contributors may have (stale?) checkouts with master branch.