diff -r 20d0e59be79b -r d98ec36be808 mercurial/configitems.py
--- a/mercurial/configitems.py	Tue Jul 02 12:55:51 2019 -0400
+++ b/mercurial/configitems.py	Sat Jul 13 23:45:32 2019 -0400
@@ -291,6 +291,9 @@
 coreconfigitem('convert', 'hg.ignoreerrors',
     default=False,
 )
+coreconfigitem('convert', 'hg.preserve-hash',
+    default=False,
+)
 coreconfigitem('convert', 'hg.revs',
     default=None,
 )