diff --git a/src/applications/config/controller/PhabricatorConfigConsoleController.php b/src/applications/config/controller/PhabricatorConfigConsoleController.php
--- a/src/applications/config/controller/PhabricatorConfigConsoleController.php
+++ b/src/applications/config/controller/PhabricatorConfigConsoleController.php
@@ -150,6 +150,16 @@
     $log_futures = array();
     $remote_futures = array();
 
+    // Git commands needs the HOME environment variable
+    // to read their .gitconfig - otherwise you cannot fix
+    // errors like "detected dubious ownership" at global level
+    // https://we.phorge.it/T15282
+    $commands_env = array();
+    $webserver_home = self::webserverHomePath();
+    if ($webserver_home) {
+      $commands_env['HOME'] = $webserver_home;
+    }
+
     foreach ($specs as $lib) {
       $root = dirname(phutil_get_library_root($lib));
 
@@ -161,9 +171,11 @@
         'git remote -v');
 
       $log_futures[$lib] = id(new ExecFuture('%C', $log_command))
+        ->setEnv($commands_env)
         ->setCWD($root);
 
       $remote_futures[$lib] = id(new ExecFuture('%C', $remote_command))
+        ->setEnv($commands_env)
         ->setCWD($root);
     }
 
@@ -248,6 +260,7 @@
       $root = dirname(phutil_get_library_root($lib));
 
       $upstream_futures[$lib] = id(new ExecFuture('%C', $merge_base_command))
+        ->setEnv($commands_env)
         ->setCWD($root);
     }
 
@@ -340,5 +353,33 @@
       ->appendChild($table_view);
   }
 
+  /**
+   * Get the HOME of the current webserver user
+   *
+   * Example: In mod_php it returns something like "/var/www/html"
+   * Example: In PHP-FPM it returns the home of the configured pool user
+   *
+   * @return string|null
+   */
+  private static function webserverHomePath() {
+
+    // Almost surely Microsoft Windows does not have these functions
+    if (function_exists('posix_geteuid') && function_exists('posix_getpwuid')) {
+
+      // This is almost surely Unix/Linux
+
+      // Let's read the "effective" user UID (not the "real" one)
+      // Example: in PHP-FPM we want the effective pool user, not root daemon
+      // https://we.phorge.it/T15298
+      $webserver_user = posix_getpwuid(posix_geteuid());
+      if ($webserver_user !== false) {
+        return $webserver_user['dir'];
+      }
+    }
+
+    // If you are used by Microsoft Windows or other esoteric things,
+    // you probably don't have any real home. Ouch! We're sorry to hear that.
+    return null;
+  }
 
 }