Add check if github repo exists/is visible in debug output

script.sh

@@ -93,6 +93,16 @@ if [ "$debug_output" = true ]; then
     fi
     done < $HOME/klipper-backup/.env
     end_debug_line
+
+    if [[ $git_host == "github.com" ]]; then
+        begin_debug_line
+        if curl -fsS "https://api.github.com/repos/${github_username}/${github_repository}" >/dev/null; then
+            echo "The GitHub repo ${github_username}/${github_repository} exists (public)"
+        else
+            echo "Error: no GitHub repo ${github_username}/${github_repository} found (maybe private)"
+        fi
+        end_debug_line
+    fi
 fi
 
 # Check if backup folder exists, create one if it does not