--- a/mercurial/localrepo.py	Thu May 07 23:54:37 2020 +0200
+++ b/mercurial/localrepo.py	Fri May 01 01:32:08 2020 +0200
@@ -2243,6 +2243,7 @@
 
         tr.hookargs[b'txnid'] = txnid
         tr.hookargs[b'txnname'] = desc
+        tr.hookargs[b'changes'] = tr.changes
         # note: writing the fncache only during finalize mean that the file is
         # outdated when running hooks. As fncache is used for streaming clone,
         # this is not expected to break anything that happen during the hooks.