Attempt to solve rare git merge-base problem

Author: moufmouf

src/Commands/RunCommand.php

@@ -155,8 +155,8 @@ protected function execute(InputInterface $input, OutputInterface $output)
             $mergeRequest = $buildService->findMergeRequestByBuildRef($projectName, $buildRef);
 
             $repo = new GitRepository(getcwd());
-            $repo->fetch();
-            $lastCommonCommit = $repo->getMergeBase($mergeRequest['target_branch'], $buildRef);
+            $targetCommit = $repo->getLatestCommitForBranch($mergeRequest['target_branch']);
+            $lastCommonCommit = $repo->getMergeBase($targetCommit, $buildRef);
 
 
             list($previousCodeCoverageProvider, $previousMethodsProvider) = $this->getMeasuresFromCommit($buildService, $mergeRequest['target_project_id'], $lastCommonCommit, $cloverFilePath, $crap4JFilePath);

src/Git/GitRepository.php

@@ -12,4 +12,11 @@ public function getMergeBase(string $commit1, string $commit2) : string
 
         return $results[0];
     }
+
+    public function getLatestCommitForBranch(string $branch) : string
+    {
+        $results = $this->extractFromCommand('git log -n 1 --pretty=format:"%H" ' . escapeshellarg($branch));
+
+        return $results[0];
+    }
 }