test: see if skipping the head "branch" works

.forgejo/workflows/geyser.yml

@@ -38,6 +38,10 @@ jobs:
           for branch in "${branches[@]}"; do
             # for debugging
             echo "$branch"
+            if [ "$branch" == "refs/remotes/origin/HEAD" ]; then
+              continue
+            fi
+
             # need to convert "'refs/remotes/origin/main" to "main"
             branch_local=$(echo "$branch"  | awk -F'[\\\\/]' ' { print $4 }')
             git switch $branch_local