diff --git a/build-tools/mono-runtimes/mono-runtimes.targets b/build-tools/mono-runtimes/mono-runtimes.targets
index 677b6db7764..d9f195a03d7 100644
--- a/build-tools/mono-runtimes/mono-runtimes.targets
+++ b/build-tools/mono-runtimes/mono-runtimes.targets
@@ -96,11 +96,11 @@
   </ItemGroup>
   <Target Name="_SetAutogenShTimeToLastCommitTimestamp">
     <Exec
-        Command="touch -m -t `git log -1 --format=%25cd --date=format-local:%25Y%25m%25d%25H%25M.%25S` autogen.sh"
+        Command="touch -m --date=%22`git log -1 --format=%25cd --date=iso`%22 autogen.sh"
         WorkingDirectory="$(MonoSourceFullPath)"
     />
     <Exec
-        Command="touch -m -t `git log -1 --format=%25cd --date=format-local:%25Y%25m%25d%25H%25M.%25S` Makefile.config.in"
+        Command="touch -m --date=%22`git log -1 --format=%25cd --date=iso`%22 Makefile.config.in"
         WorkingDirectory="$(LlvmSourceFullPath)"
     />
   </Target>