Update src/Composer/Repository/Vcs/GitDriver.php

src/Composer/Repository/Vcs/GitDriver.php

@@ -54,11 +54,12 @@ class GitDriver extends VcsDriver
                 $command = sprintf('git clone --mirror %s %s', escapeshellarg($this->url), escapeshellarg($this->repoDir));
                 if (0 !== $this->process->execute($command, $output)) {
                     $output = $this->process->getErrorOutput();
-                    if (false === strpos($this->process->execute('git --version', $handler), 'git version')) {
-                        throw new \RuntimeException('Failed to clone '.$this->url.', it looks like git isn\'t accessible through the console, please check your installation and your PATH env.' . "\n\n" . $this->process->getErrorOutput());
-                    } else {
-                        throw new \RuntimeException('Failed to clone '.$this->url.', could not read packages from it ('.$output.')');
+            
+                    if (127 === $this->process->execute('git --version', $handler)) {
+                        throw new \RuntimeException('Failed to clone '.$this->url.', git isn\'t accessible through the console, please check your installation and your PATH env.' . "\n\n" . $this->process->getErrorOutput());
                     }
+                    
+                    throw new \RuntimeException('Failed to clone '.$this->url.', could not read packages from it ('.$output.')');
                 }
             }
         }