diff --git a/devtools/fakehub b/devtools/fakehub
index cc475bcf..4c66388b 100755
--- a/devtools/fakehub
+++ b/devtools/fakehub
@@ -14,7 +14,7 @@ from urllib.parse import quote
 
 sys.path.insert(0, os.getcwd())
 import koji
-from kojihub import auth, kojixmlrpc, kojihub
+from kojihub import auth, kojixmlrpc, kojihub, db
 from koji.context import context
 import koji.xmlrpcplus
 
@@ -104,6 +104,8 @@ def get_options():
     parser.add_option('--user', '-u', help='execute as user')
     parser.add_option('--exclusive', '-x', action='store_true',
                       help='emulate an exclusive session')
+    parser.add_option('-n', '--no-commit', action='store_true',
+                      help='skip commit')
     opts, args = parser.parse_args()
 
     # parse request from args
@@ -149,10 +151,16 @@ def set_config(environ):
         environ['koji.hub.ConfigDir'] = lconfigd
 
 
+def skip_commit(cnx):
+    print('Skipping commit')
+
+
 def main():
     options = get_options()
     if options.pdb:
         kojixmlrpc.ModXMLRPCRequestHandler.handle_rpc = handle_rpc
+    if options.no_commit:
+        db.DBWrapper.commit = skip_commit
 
     environ = {}
     environ['SCRIPT_FILENAME'] = kojixmlrpc.__file__
diff --git a/kojihub/kojihub.py b/kojihub/kojihub.py
index 88fb94df..4358b33d 100644
--- a/kojihub/kojihub.py
+++ b/kojihub/kojihub.py
@@ -16116,11 +16116,13 @@ def create_rpm_checksum(rpm_id, sigkey, chsum_dict):
                         f"rpm ID {r['rpm_id']}, sigkey {r['sigkey']} and "
                         f"checksum type {koji.CHECKSUM_TYPES[r['checksum_type']]}.")
     if chsum_dict:
-        insert = BulkInsertProcessor(table='rpm_checksum')
-        for func, chsum in chsum_dict.items():
-            insert.add_record(rpm_id=rpm_id, sigkey=sigkey, checksum=chsum,
-                              checksum_type=koji.CHECKSUM_TYPES[func])
-        insert.execute()
+        for func, chsum in sorted(chsum_dict.items()):
+            data = {'rpm_id': rpm_id,
+                    'sigkey': sigkey,
+                    'checksum': chsum,
+                    'checksum_type': koji.CHECKSUM_TYPES[func]}
+            upsert = UpsertProcessor(table='rpm_checksum', data=data, skip_dup=True)
+            upsert.execute()
 
 
 def reject_draft(data, is_rpm=False, error=None):