diff --git a/src/applications/differential/landing/DifferentialGitHubLandingStrategy.php b/src/applications/differential/landing/DifferentialGitHubLandingStrategy.php
--- a/src/applications/differential/landing/DifferentialGitHubLandingStrategy.php
+++ b/src/applications/differential/landing/DifferentialGitHubLandingStrategy.php
@@ -47,6 +47,11 @@
     DifferentialRevision $revision,
     PhabricatorRepository $repository) {
 
+    // TODO: This temporarily disables this action, because it doesn't work
+    // and is confusing to users. If you want to use it, comment out this line
+    // for now and we'll provide real support eventually.
+    return;
+
     $vcs = $repository->getVersionControlSystem();
     if ($vcs !== PhabricatorRepositoryType::REPOSITORY_TYPE_GIT) {
       return;