Fixed PHPStan errors

Author: janpecha

src/GitRepository.php

@@ -590,6 +590,7 @@ public function run(...$args)
 
 /**
  * @param array<mixed> $args
+ * @param (callable(string $value): (string|FALSE))|NULL $filter
  * @return string[]|NULL
  * @throws GitException
  */

src/Runners/CliRunner.php

@@ -52,6 +52,15 @@ public function run($cwd, array $args, ?array $env = NULL)
 throw new GitException("Executing of command '$command' failed (directory $cwd).");
 }
 
+if (!(is_array($pipes)
+&& isset($pipes[0], $pipes[1], $pipes[2])
+&& is_resource($pipes[0])
+&& is_resource($pipes[1])
+&& is_resource($pipes[2])
+)) {
+throw new GitException("Invalid pipes for command '$command' failed (directory $cwd).");
+}
+
 // Reset output and error
 stream_set_blocking($pipes[1], FALSE);
 stream_set_blocking($pipes[2], FALSE);