Move zero hash protection to git library

Author: sebastianfeldmann

composer.json

@@ -39,7 +39,7 @@
     "captainhook/secrets": "^0.9.4",
     "sebastianfeldmann/camino": "^0.9.2",
     "sebastianfeldmann/cli": "^3.3",
-    "sebastianfeldmann/git": "^3.15.3",
+    "sebastianfeldmann/git": "^3.16.0",
     "symfony/console": "^2.7 || ^3.0 || ^4.0 || ^5.0 || ^6.0 || ^7.0 || ^8.0",
     "symfony/filesystem": "^2.7 || ^3.0 || ^4.0 || ^5.0 || ^6.0 || ^7.0 || ^8.0",
     "symfony/process": "^2.7 || ^3.0 || ^4.0 || ^5.0 || ^6.0 || ^7.0 || ^8.0"

src/Git/ChangedFiles/Detector/Fallback.php

@@ -36,13 +36,8 @@ class Fallback extends Detector
      */
     public function getChangedFiles(array $filter = []): array
     {
-        $previousHead = $this->io->getArgument(Hooks::ARG_PREVIOUS_HEAD, 'HEAD@{1}');
-        if (Util::isZeroHash($previousHead)) {
-            return [];
-        }
-
         return $this->repository->getDiffOperator()->getChangedFiles(
-            $previousHead,
+            $this->io->getArgument(Hooks::ARG_PREVIOUS_HEAD, 'HEAD@{1}'),
             'HEAD',
             $filter
         );

src/Git/ChangedFiles/Detector/PostRewrite.php

@@ -38,10 +38,6 @@ public function getChangedFiles(array $filter = []): array
         $old      = $ranges[0]->from()->id();
         $new      = $ranges[0]->to()->id();
 
-        if (Util::isZeroHash($old) || Util::isZeroHash($new)) {
-            return [];
-        }
-
         return $this->repository->getDiffOperator()->getChangedFiles($old, $new, $filter);
     }
 }

src/Git/ChangedFiles/Detector/PrePush.php

@@ -103,9 +103,6 @@ private function collectChangedFiles(array $ranges, array $filter): array
                 $oldHash = $this->repository->getLogOperator()->getBranchRevFromRefLog($range->to()->branch());
                 $newHash = 'HEAD';
             }
-            if (Util::isZeroHash($oldHash) || Util::isZeroHash($newHash)) {
-                continue;
-            }
             if (!empty($oldHash)) {
                 $files[] = $this->repository->getDiffOperator()->getChangedFiles($oldHash, $newHash, $filter);
             }