diff --git a/bin/app-json.py b/bin/app-json.py
index 34b8e18..bfbb527 100755
--- a/bin/app-json.py
+++ b/bin/app-json.py
@@ -177,10 +177,6 @@ def get_app_versions(app_path, cached_apps_json):
         existing_tags = []
 
     for tag in tags:
-        if tag in existing_tags:
-            log.info(f"Skipping {tag} because we've already processed it")
-            continue
-
         _run_cmd(f"git checkout {tag}")
 
         services_cmd = "yq e '.services | keys | .[]' compose*.yml"
@@ -189,7 +185,18 @@ def get_app_versions(app_path, cached_apps_json):
         parsed_services = []
         service_versions = {}
         for service in services:
+            if service in ("null", "---"):
+                continue
+
+            if tag in existing_tags:
+                log.info(f"Skipping {tag} because we've already processed it")
+                existing_versions = cached_apps_json[app_name]["versions"][tag][service]
+                service_versions[service] = existing_versions
+                _run_cmd(f"git checkout {initial_branch}")
+                continue
+
             if service in parsed_services:
+                log.info(f"Skipped {service} asa we've already parsed it locally")
                 continue
 
             services_cmd = f"yq e '.services.{service}.image' compose*.yml"