(#PE-16944) Mend action to checkout the correct repository (#398)

Author: CoMfUcIoS

.github/workflows/mend.yml

@@ -20,6 +20,8 @@ jobs:
         uses: "actions/checkout@v3"
         with:
           fetch-depth: 1
+          repository: "puppetlabs/puppetlabs-peadm"
+          ref: "main"
 
       - name: "setup ruby"
         uses: "ruby/setup-ruby@v1"