diff --git a/src/__phutil_library_map__.php b/src/__phutil_library_map__.php
--- a/src/__phutil_library_map__.php
+++ b/src/__phutil_library_map__.php
@@ -4408,6 +4408,7 @@
     'PhabricatorRepositoryParsedChange' => 'applications/repository/data/PhabricatorRepositoryParsedChange.php',
     'PhabricatorRepositoryPermanentRefsTransaction' => 'applications/repository/xaction/PhabricatorRepositoryPermanentRefsTransaction.php',
     'PhabricatorRepositoryPublisher' => 'applications/repository/query/PhabricatorRepositoryPublisher.php',
+    'PhabricatorRepositoryPublisherHoldReason' => 'applications/repository/query/PhabricatorRepositoryPublisherHoldReason.php',
     'PhabricatorRepositoryPullEngine' => 'applications/repository/engine/PhabricatorRepositoryPullEngine.php',
     'PhabricatorRepositoryPullEvent' => 'applications/repository/storage/PhabricatorRepositoryPullEvent.php',
     'PhabricatorRepositoryPullEventPHIDType' => 'applications/repository/phid/PhabricatorRepositoryPullEventPHIDType.php',
@@ -10690,6 +10691,7 @@
     'PhabricatorRepositoryParsedChange' => 'Phobject',
     'PhabricatorRepositoryPermanentRefsTransaction' => 'PhabricatorRepositoryTransactionType',
     'PhabricatorRepositoryPublisher' => 'Phobject',
+    'PhabricatorRepositoryPublisherHoldReason' => 'Phobject',
     'PhabricatorRepositoryPullEngine' => 'PhabricatorRepositoryEngine',
     'PhabricatorRepositoryPullEvent' => array(
       'PhabricatorRepositoryDAO',
diff --git a/src/applications/audit/query/PhabricatorCommitSearchEngine.php b/src/applications/audit/query/PhabricatorCommitSearchEngine.php
--- a/src/applications/audit/query/PhabricatorCommitSearchEngine.php
+++ b/src/applications/audit/query/PhabricatorCommitSearchEngine.php
@@ -54,6 +54,10 @@
       $query->withUnreachable($map['unreachable']);
     }
 
+    if ($map['unpublished'] !== null) {
+      $query->withUnpublished($map['unpublished']);
+    }
+
     if ($map['ancestorsOf']) {
       $query->withAncestorsOf($map['ancestorsOf']);
     }
@@ -127,6 +131,17 @@
           pht(
             'Find or exclude unreachable commits which are not ancestors of '.
             'any branch, tag, or ref.')),
+      id(new PhabricatorSearchThreeStateField())
+        ->setLabel(pht('Unpublished'))
+        ->setKey('unpublished')
+        ->setOptions(
+          pht('(Show All)'),
+          pht('Show Only Unpublished Commits'),
+          pht('Hide Unpublished Commits'))
+        ->setDescription(
+          pht(
+            'Find or exclude unpublished commits which are not ancestors of '.
+            'any permanent branch, tag, or ref.')),
       id(new PhabricatorSearchStringListField())
         ->setLabel(pht('Ancestors Of'))
         ->setKey('ancestorsOf')
diff --git a/src/applications/diffusion/controller/DiffusionCommitController.php b/src/applications/diffusion/controller/DiffusionCommitController.php
--- a/src/applications/diffusion/controller/DiffusionCommitController.php
+++ b/src/applications/diffusion/controller/DiffusionCommitController.php
@@ -116,6 +116,7 @@
     $commit_data = $commit->getCommitData();
     $is_foreign = $commit_data->getCommitDetail('foreign-svn-stub');
     $error_panel = null;
+    $unpublished_panel = null;
 
     $hard_limit = 1000;
 
@@ -248,9 +249,41 @@
 
         $header->addTag($nonpermanent_tag);
 
-        $this->commitErrors[] = pht(
-          'This commit is not reachable from any permanent branch, tag, '.
-          'or ref.');
+        $holds = $commit_data->newPublisherHoldReasons();
+
+        $reasons = array();
+        foreach ($holds as $hold) {
+          $reasons[] = array(
+            phutil_tag('strong', array(), pht('%s:', $hold->getName())),
+            ' ',
+            $hold->getSummary(),
+          );
+        }
+
+        if (!$holds) {
+          $reasons[] = pht('No further details are available.');
+        }
+
+        $doc_href = PhabricatorEnv::getDoclink(
+          'Diffusion User Guide: Permanent Refs');
+        $doc_link = phutil_tag(
+          'a',
+          array(
+            'href' => $doc_href,
+            'target' => '_blank',
+          ),
+          pht('Learn More'));
+
+        $title = array(
+          pht('Unpublished Commit'),
+          pht(" \xC2\xB7 "),
+          $doc_link,
+        );
+
+        $unpublished_panel = id(new PHUIInfoView())
+          ->setTitle($title)
+          ->setErrors($reasons)
+          ->setSeverity(PHUIInfoView::SEVERITY_WARNING);
       }
 
 
@@ -445,23 +478,36 @@
         ->setWidth((int)$width);
     }
 
+    $description_box = id(new PHUIObjectBoxView())
+      ->setHeaderText(pht('Description'))
+      ->setBackground(PHUIObjectBoxView::BLUE_PROPERTY)
+      ->appendChild($detail_list);
+
+    $detail_box = id(new PHUIObjectBoxView())
+      ->setHeaderText(pht('Details'))
+      ->setBackground(PHUIObjectBoxView::BLUE_PROPERTY)
+      ->appendChild($details);
+
     $view = id(new PHUITwoColumnView())
       ->setHeader($header)
       ->setSubheader($subheader)
-      ->setMainColumn(array(
-        $error_panel,
-        $timeline,
-        $merge_table,
-        $info_panel,
-      ))
-      ->setFooter(array(
-        $change_table,
-        $change_list,
-        $add_comment,
-      ))
-      ->addPropertySection(pht('Description'), $detail_list)
-      ->addPropertySection(pht('Details'), $details)
-      ->setCurtain($curtain);
+      ->setCurtain($curtain)
+      ->setMainColumn(
+        array(
+          $unpublished_panel,
+          $error_panel,
+          $description_box,
+          $detail_box,
+          $timeline,
+          $merge_table,
+          $info_panel,
+        ))
+      ->setFooter(
+        array(
+          $change_table,
+          $change_list,
+          $add_comment,
+        ));
 
     $page = $this->newPage()
       ->setTitle($commit->getDisplayName())
diff --git a/src/applications/diffusion/editor/DiffusionCommitEditEngine.php b/src/applications/diffusion/editor/DiffusionCommitEditEngine.php
--- a/src/applications/diffusion/editor/DiffusionCommitEditEngine.php
+++ b/src/applications/diffusion/editor/DiffusionCommitEditEngine.php
@@ -113,30 +113,6 @@
       ->setConduitTypeDescription(pht('New auditors.'))
       ->setValue($object->getAuditorPHIDsForEdit());
 
-    $holds = $data->getPublisherHoldReasons();
-    if ($holds) {
-      $hold_names = array();
-      foreach ($holds as $hold) {
-        $hold_names[] = id(new PhabricatorRepositoryPublisher())
-          ->getHoldName($hold);
-      }
-      $desc = implode('; ', $hold_names);
-
-      $doc_href = PhabricatorEnv::getDoclink(
-        'Diffusion User Guide: Permanent Refs');
-      $doc_link = phutil_tag(
-        'a',
-        array(
-          'href' => $doc_href,
-          'target' => '_blank',
-        ),
-        pht('Learn More'));
-
-        $fields[] = id(new PhabricatorStaticEditField())
-          ->setLabel(pht('Unpublished'))
-          ->setValue(array($desc, " \xC2\xB7 ", $doc_link));
-    }
-
     $actions = DiffusionCommitActionTransaction::loadAllActions();
     $actions = msortv($actions, 'getCommitActionOrderVector');
 
diff --git a/src/applications/diffusion/query/DiffusionCommitQuery.php b/src/applications/diffusion/query/DiffusionCommitQuery.php
--- a/src/applications/diffusion/query/DiffusionCommitQuery.php
+++ b/src/applications/diffusion/query/DiffusionCommitQuery.php
@@ -15,6 +15,7 @@
   private $statuses;
   private $packagePHIDs;
   private $unreachable;
+  private $unpublished;
 
   private $needAuditRequests;
   private $needAuditAuthority;
@@ -153,6 +154,11 @@
     return $this;
   }
 
+  public function withUnpublished($unpublished) {
+    $this->unpublished = $unpublished;
+    return $this;
+  }
+
   public function withStatuses(array $statuses) {
     $this->statuses = $statuses;
     return $this;
@@ -853,6 +859,21 @@
       }
     }
 
+    if ($this->unpublished !== null) {
+      if ($this->unpublished) {
+        $where[] = qsprintf(
+          $conn,
+          '(commit.importStatus & %d) = 0',
+          PhabricatorRepositoryCommit::IMPORTED_CLOSEABLE);
+      } else {
+        $where[] = qsprintf(
+          $conn,
+          '(commit.importStatus & %d) = %d',
+          PhabricatorRepositoryCommit::IMPORTED_CLOSEABLE,
+          PhabricatorRepositoryCommit::IMPORTED_CLOSEABLE);
+      }
+    }
+
     return $where;
   }
 
diff --git a/src/applications/diffusion/view/DiffusionHistoryView.php b/src/applications/diffusion/view/DiffusionHistoryView.php
--- a/src/applications/diffusion/view/DiffusionHistoryView.php
+++ b/src/applications/diffusion/view/DiffusionHistoryView.php
@@ -98,6 +98,13 @@
     foreach ($history as $item) {
       $commit = $item->getCommit();
       if ($commit) {
+
+        // NOTE: The "commit" objects in the history list may be undiscovered,
+        // and thus not yet have PHIDs. Only load data for commits with PHIDs.
+        if (!$commit->getPHID()) {
+          continue;
+        }
+
         $commits[] = $commit;
       }
     }
diff --git a/src/applications/repository/query/PhabricatorRepositoryPublisher.php b/src/applications/repository/query/PhabricatorRepositoryPublisher.php
--- a/src/applications/repository/query/PhabricatorRepositoryPublisher.php
+++ b/src/applications/repository/query/PhabricatorRepositoryPublisher.php
@@ -89,32 +89,4 @@
     return $reasons;
   }
 
-/* -(  Rendering  )---------------------------------------------------------- */
-
-  public function getHoldName($hold) {
-    $map = array(
-      self::HOLD_IMPORTING => array(
-        'name' => pht('Repository Importing'),
-      ),
-      self::HOLD_PUBLISHING_DISABLED => array(
-        'name' => pht('Repository Publishing Disabled'),
-      ),
-      self::HOLD_REF_NOT_BRANCH => array(
-        'name' => pht('Not a Branch'),
-      ),
-      self::HOLD_NOT_REACHABLE_FROM_PERMANENT_REF => array(
-        'name' => pht('Not Reachable from Permanent Ref'),
-      ),
-      self::HOLD_UNTRACKED => array(
-        'name' => pht('Untracked Ref'),
-      ),
-      self::HOLD_NOT_PERMANENT_REF => array(
-        'name' => pht('Not a Permanent Ref'),
-      ),
-    );
-
-    $spec = idx($map, $hold, array());
-    return idx($spec, 'name', pht('Unknown ("%s")', $hold));
-  }
-
 }
diff --git a/src/applications/repository/query/PhabricatorRepositoryPublisherHoldReason.php b/src/applications/repository/query/PhabricatorRepositoryPublisherHoldReason.php
new file mode 100644
--- /dev/null
+++ b/src/applications/repository/query/PhabricatorRepositoryPublisherHoldReason.php
@@ -0,0 +1,78 @@
+<?php
+
+final class PhabricatorRepositoryPublisherHoldReason
+  extends Phobject {
+
+  private $key;
+  private $spec;
+
+  public static function newForHoldKey($key) {
+    $spec = self::getSpecForHoldKey($key);
+
+    $hold = new self();
+    $hold->key = $key;
+    $hold->spec = $spec;
+
+    return $hold;
+  }
+
+  private static function getSpecForHoldKey($key) {
+    $specs = self::getHoldReasonSpecs();
+
+    $spec = idx($specs, $key);
+
+    if (!$spec) {
+      $spec = array(
+        'name' => pht('Unknown Hold ("%s")', $key),
+      );
+    }
+
+    return $spec;
+  }
+
+  public function getName() {
+    return $this->getProperty('name');
+  }
+
+  public function getSummary() {
+    return $this->getProperty('summary');
+  }
+
+  private function getProperty($key, $default = null) {
+    return idx($this->spec, $key, $default);
+  }
+
+  private static function getHoldReasonSpecs() {
+    $map = array(
+      PhabricatorRepositoryPublisher::HOLD_IMPORTING => array(
+        'name' => pht('Repository Importing'),
+        'summary' => pht('This repository is still importing.'),
+      ),
+      PhabricatorRepositoryPublisher::HOLD_PUBLISHING_DISABLED => array(
+        'name' => pht('Publishing Disabled'),
+        'summary' => pht('All publishing is disabled for this repository.'),
+      ),
+      PhabricatorRepositoryPublisher::HOLD_NOT_REACHABLE_FROM_PERMANENT_REF =>
+      array(
+        'name' => pht('Not On Permanent Ref'),
+        'summary' => pht(
+          'This commit is not an ancestor of any permanent ref.'),
+      ),
+      PhabricatorRepositoryPublisher::HOLD_REF_NOT_BRANCH => array(
+        'name' => pht('Not a Branch'),
+        'summary' => pht('This ref is not a branch.'),
+      ),
+      PhabricatorRepositoryPublisher::HOLD_UNTRACKED => array(
+        'name' => pht('Untracked Ref'),
+        'summary' => pht('This ref is configured as untracked.'),
+      ),
+      PhabricatorRepositoryPublisher::HOLD_NOT_PERMANENT_REF => array(
+        'name' => pht('Not a Permanent Ref'),
+        'summary' => pht('This ref is not configured as a permanent ref.'),
+      ),
+    );
+
+    return $map;
+  }
+
+}
diff --git a/src/applications/repository/storage/PhabricatorRepositoryCommitData.php b/src/applications/repository/storage/PhabricatorRepositoryCommitData.php
--- a/src/applications/repository/storage/PhabricatorRepositoryCommitData.php
+++ b/src/applications/repository/storage/PhabricatorRepositoryCommitData.php
@@ -68,7 +68,7 @@
       ->loadFromArray($dict);
   }
 
-  public function getPublisherHoldReasons() {
+  public function newPublisherHoldReasons() {
     $holds = $this->getCommitDetail('holdReasons');
 
     // Look for the legacy "autocloseReason" if we don't have a modern list
@@ -84,7 +84,12 @@
       $holds = array();
     }
 
-    return $holds;
+    foreach ($holds as $key => $reason) {
+      $holds[$key] = PhabricatorRepositoryPublisherHoldReason::newForHoldKey(
+        $reason);
+    }
+
+    return array_values($holds);
   }
 
 }
diff --git a/src/view/phui/PHUIInfoView.php b/src/view/phui/PHUIInfoView.php
--- a/src/view/phui/PHUIInfoView.php
+++ b/src/view/phui/PHUIInfoView.php
@@ -147,7 +147,7 @@
     }
 
     $title = $this->title;
-    if (strlen($title)) {
+    if ($title || strlen($title)) {
       $title = phutil_tag(
         'h1',
         array(