diff --git a/src/__phutil_library_map__.php b/src/__phutil_library_map__.php
index aea1adb006..115c47ff68 100644
--- a/src/__phutil_library_map__.php
+++ b/src/__phutil_library_map__.php
@@ -388,6 +388,7 @@ phutil_register_library_map(array(
     'DifferentialLandingActionMenuEventListener' => 'applications/differential/landing/DifferentialLandingActionMenuEventListener.php',
     'DifferentialLandingStrategy' => 'applications/differential/landing/DifferentialLandingStrategy.php',
     'DifferentialLandingToHostedGit' => 'applications/differential/landing/DifferentialLandingToHostedGit.php',
+    'DifferentialLandingToHostedMercurial' => 'applications/differential/landing/DifferentialLandingToHostedMercurial.php',
     'DifferentialLinesFieldSpecification' => 'applications/differential/field/specification/DifferentialLinesFieldSpecification.php',
     'DifferentialLintFieldSpecification' => 'applications/differential/field/specification/DifferentialLintFieldSpecification.php',
     'DifferentialLintStatus' => 'applications/differential/constants/DifferentialLintStatus.php',
@@ -2647,6 +2648,7 @@ phutil_register_library_map(array(
     'DifferentialJIRAIssuesFieldSpecification' => 'DifferentialFieldSpecification',
     'DifferentialLandingActionMenuEventListener' => 'PhabricatorEventListener',
     'DifferentialLandingToHostedGit' => 'DifferentialLandingStrategy',
+    'DifferentialLandingToHostedMercurial' => 'DifferentialLandingStrategy',
     'DifferentialLinesFieldSpecification' => 'DifferentialFieldSpecification',
     'DifferentialLintFieldSpecification' => 'DifferentialFieldSpecification',
     'DifferentialLocalCommitsView' => 'AphrontView',
diff --git a/src/applications/differential/DifferentialGetWorkingCopy.php b/src/applications/differential/DifferentialGetWorkingCopy.php
index 01641261d2..6118aebe10 100644
--- a/src/applications/differential/DifferentialGetWorkingCopy.php
+++ b/src/applications/differential/DifferentialGetWorkingCopy.php
@@ -36,4 +36,32 @@ final class DifferentialGetWorkingCopy {
     return $workspace;
   }
 
+  /**
+   * Creates and/or cleans a workspace for the requested repo.
+   *
+   * return ArcanistMercurialAPI
+   */
+  public static function getCleanMercurialWorkspace(
+    PhabricatorRepository $repo) {
+
+    $origin_path = $repo->getLocalPath();
+
+    $path = rtrim($origin_path, '/');
+    $path = $path . '__workspace';
+
+    if (!Filesystem::pathExists($path)) {
+      $repo->execxLocalCommand(
+        'clone -- file://%s %s',
+        $origin_path,
+        $path);
+    }
+
+    $workspace = new ArcanistMercurialAPI($path);
+    $workspace->execxLocal('pull');
+    $workspace->execxLocal('update --clean default');
+    $workspace->reloadWorkingCopy();
+
+    return $workspace;
+  }
+
 }
diff --git a/src/applications/differential/controller/DifferentialRevisionLandController.php b/src/applications/differential/controller/DifferentialRevisionLandController.php
index 003c4900ac..fad8b48e07 100644
--- a/src/applications/differential/controller/DifferentialRevisionLandController.php
+++ b/src/applications/differential/controller/DifferentialRevisionLandController.php
@@ -68,7 +68,7 @@ final class DifferentialRevisionLandController extends DifferentialController {
     $prompt = hsprintf('%s<br><br>%s',
       pht(
         'This will squash and rebase revision %s, and push it to '.
-          'origin/master.',
+          'the default / master branch.',
         $revision_id),
       pht('It is an experimental feature and may not work.'));
 
diff --git a/src/applications/differential/landing/DifferentialLandingStrategy.php b/src/applications/differential/landing/DifferentialLandingStrategy.php
index 46a0f74333..0c7efad5f0 100644
--- a/src/applications/differential/landing/DifferentialLandingStrategy.php
+++ b/src/applications/differential/landing/DifferentialLandingStrategy.php
@@ -35,7 +35,21 @@ abstract class DifferentialLandingStrategy {
     try {
         return DifferentialGetWorkingCopy::getCleanGitWorkspace($repository);
     } catch (Exception $e) {
-      throw new PhutilProxyException (
+      throw new PhutilProxyException(
+        'Failed to allocate a workspace',
+        $e);
+    }
+  }
+
+  /**
+   * might break if repository is not Mercurial.
+   */
+  protected function getMercurialWorkspace(PhabricatorRepository $repository) {
+    try {
+      return DifferentialGetWorkingCopy::getCleanMercurialWorkspace(
+        $repository);
+    } catch (Exception $e) {
+      throw new PhutilProxyException(
         'Failed to allocate a workspace',
         $e);
     }
diff --git a/src/applications/differential/landing/DifferentialLandingToHostedMercurial.php b/src/applications/differential/landing/DifferentialLandingToHostedMercurial.php
new file mode 100644
index 0000000000..fd533aaf8b
--- /dev/null
+++ b/src/applications/differential/landing/DifferentialLandingToHostedMercurial.php
@@ -0,0 +1,120 @@
+<?php
+
+final class DifferentialLandingToHostedMercurial
+  extends DifferentialLandingStrategy {
+
+  public function processLandRequest(
+    AphrontRequest $request,
+    DifferentialRevision $revision,
+    PhabricatorRepository $repository) {
+
+    $viewer = $request->getUser();
+
+    $workspace = $this->getMercurialWorkspace($repository);
+
+    try {
+      $this->commitRevisionToWorkspace(
+        $revision,
+        $workspace,
+        $viewer);
+    } catch (Exception $e) {
+      throw new PhutilProxyException(
+        'Failed to commit patch',
+        $e);
+    }
+
+    try {
+      $this->pushWorkspaceRepository(
+        $repository,
+        $workspace,
+        $viewer);
+    } catch (Exception $e) {
+      throw new PhutilProxyException(
+        'Failed to push changes upstream',
+        $e);
+    }
+  }
+
+  public function commitRevisionToWorkspace(
+    DifferentialRevision $revision,
+    ArcanistRepositoryAPI $workspace,
+    PhabricatorUser $user) {
+
+    $diff_id = $revision->loadActiveDiff()->getID();
+
+    $call = new ConduitCall(
+      'differential.getrawdiff',
+      array(
+        'diffID'   => $diff_id,
+      ));
+
+    $call->setUser($user);
+    $raw_diff = $call->execute();
+
+    $future = $workspace->execFutureLocal('patch --no-commit -');
+    $future->write($raw_diff);
+    $future->resolvex();
+
+    $workspace->reloadWorkingCopy();
+
+    $call = new ConduitCall(
+      'differential.getcommitmessage',
+      array(
+        'revision_id'   => $revision->getID(),
+      ));
+
+    $call->setUser($user);
+    $message = $call->execute();
+
+    $author = id(new PhabricatorUser())->loadOneWhere(
+      'phid = %s',
+      $revision->getAuthorPHID());
+
+    $author_string = sprintf(
+      '%s <%s>',
+      $author->getRealName(),
+      $author->loadPrimaryEmailAddress());
+    $author_date = $revision->getDateCreated();
+
+    $workspace->execxLocal(
+      'commit --date=%s --user=%s '.
+      '--message=%s',
+      $author_date.' 0',
+      $author_string,
+      $message);
+  }
+
+
+  public function pushWorkspaceRepository(
+    PhabricatorRepository $repository,
+    ArcanistRepositoryAPI $workspace,
+    PhabricatorUser $user) {
+
+    $workspace->execxLocal("push -b default");
+  }
+
+  public function createMenuItems(
+    PhabricatorUser $viewer,
+    DifferentialRevision $revision,
+    PhabricatorRepository $repository) {
+
+    $vcs = $repository->getVersionControlSystem();
+    if ($vcs !== PhabricatorRepositoryType::REPOSITORY_TYPE_MERCURIAL) {
+      return;
+    }
+
+    if (!$repository->isHosted()) {
+      return;
+    }
+
+    $can_push = PhabricatorPolicyFilter::hasCapability(
+        $viewer,
+        $repository,
+        DiffusionCapabilityPush::CAPABILITY);
+
+    return $this->createActionView(
+      $revision,
+      pht('Land to Hosted Repository'),
+      !$can_push);
+  }
+}