diff --git a/mock/py/mockbuild/plugins/package_state.py b/mock/py/mockbuild/plugins/package_state.py
index 11bd475aa..2dd6f7bb1 100644
--- a/mock/py/mockbuild/plugins/package_state.py
+++ b/mock/py/mockbuild/plugins/package_state.py
@@ -50,10 +50,16 @@ def query_packages(fields, chrootpath=None, executor=sp_executor):
     # appears in rpm output?
     separator = '|/@'
 
-    package_list_cmd.append(separator.join(f"%{{{x}}}" for x in fields) + "\n")
+    def _map_key(key):
+        if key == "signature":
+            return "sigpgp:pgpsig"
+        return key
+    query_fields = [_map_key(f) for f in fields]
+
+    package_list_cmd.append(separator.join(f"%{{{x}}}" for x in query_fields) + "\n")
 
     def _fixup(package):
-        key = "sigpgp:pgpsig"
+        key = "signature"
         if key in package:
             if package[key] == "(none)":
                 package[key] = None
@@ -149,7 +155,7 @@ def _installedPreBuildHook2(self):
                 # mimic: https://docs.pagure.org/koji/content_generator_metadata/#buildroots
                 query_fields = ["license", "name", "version", "release",
                                 "arch", "epoch", "nvra", "sigmd5",
-                                "sigpgp:pgpsig"]
+                                "signature"]
                 def _executor(cmd):
                     out, _ = self.buildroot.doOutChroot(cmd, returnOutput=True)
                     return out