--- a/mercurial/cext/util.h	Mon Oct 18 11:23:07 2021 +0200
+++ b/mercurial/cext/util.h	Tue Oct 19 22:04:14 2021 +0200
@@ -47,6 +47,7 @@
 static const int dirstate_flag_has_fallback_exec = 1 << 12;
 static const int dirstate_flag_fallback_symlink = 1 << 13;
 static const int dirstate_flag_has_fallback_symlink = 1 << 14;
+static const int dirstate_flag_mtime_second_ambiguous = 1 << 15;
 
 extern PyTypeObject dirstateItemType;
 #define dirstate_tuple_check(op) (Py_TYPE(op) == &dirstateItemType)