diff --git a/infra/bots/gen_tasks.go b/infra/bots/gen_tasks.go
index 95f76ce..186b11a 100644
--- a/infra/bots/gen_tasks.go
+++ b/infra/bots/gen_tasks.go
@@ -1216,7 +1216,7 @@
 		}
 	}
 	replaceArg("-repository", "https://chromium.googlesource.com/chromium/tools/build")
-	replaceArg("-revision", "HEAD")
+	replaceArg("-revision", "617e0fd3186eaae8bcb7521def0d6d3b4a5bcaf1")
 	usesGit(task, name)
 	task.Dependencies = []string{} // No bundled recipes for this one.
 	b.MustAddTask(name, task)
diff --git a/infra/bots/tasks.json b/infra/bots/tasks.json
index 8bc6657..f6ca224 100755
--- a/infra/bots/tasks.json
+++ b/infra/bots/tasks.json
@@ -19515,7 +19515,7 @@
         "-repository",
         "https://chromium.googlesource.com/chromium/tools/build",
         "-revision",
-        "HEAD"
+        "617e0fd3186eaae8bcb7521def0d6d3b4a5bcaf1"
       ],
       "dimensions": [
         "cpu:x86-64-Haswell_GCE",