Merge branch '7963-build-error-on-missing-repo-access' into 'master'

OP#7963 CI Server fails on function [build]  https://projects.iml.unibe.ch/work_packages/7963vcs git: do not return boolean false but array with key error

See merge request !87

public_html/deployment/classes/vcs.git.class.php

@@ -404,16 +404,19 @@ class vcs implements iVcs
     /**
      * Get current revision and commit message from remote repository
      * @see $this::getRevision
-     * It returns false if no branch is set
+     * It returns a key "error" if no branch is set
      * 
      * @param boolean  $bRefresh  optional: refresh data; default: use cache
-     * @return bool|array
+     * @return array
      */
-    public function getRepoRevision(bool $bRefresh = false): bool|array
+    public function getRepoRevision(bool $bRefresh = false): array
     {
         $this->log(__FUNCTION__ . "($bRefresh) start");
         if (!$this->_sCurrentBranch) {
-            return false;
+            return [
+                "error" => "Error: Current git branch was not detected.",
+            ];
+            // return false;
         }
         $sMessage = $this->getCommitmessageByBranch(false, $bRefresh ? 'dummy_to_force_refresh' : false);
         if ($sMessage) {