--- a/mercurial/revlogutils/sidedata.py	Wed Sep 04 01:20:54 2019 +0200
+++ b/mercurial/revlogutils/sidedata.py	Wed Sep 04 03:19:58 2019 +0200
@@ -73,3 +73,7 @@
         dataoffset = nextdataoffset
     text = text[dataoffset:]
     return text, True, sidedata
+
+def sidedatarawprocessor(rl, text):
+    # side data modifies rawtext and prevent rawtext hash validation
+    return False