issue:checkout: fetch remote before checkout when remote already exists (#330)

* Initial plan

* Fix issue:checkout to fetch remote when it already exists

Co-authored-by: mglaman <3698644+mglaman@users.noreply.github.com>
Agent-Logs-Url: https://github.com/mglaman/drupalorg-cli/sessions/90a6c0b6-a6a3-4e52-b398-95a0e564634a

* Update src/Cli/Command/Issue/Checkout.php

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: mglaman <3698644+mglaman@users.noreply.github.com>
Co-authored-by: Matt Glaman <nmd.matt@gmail.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: 3 people

src/Cli/Command/Issue/Checkout.php

@@ -70,6 +70,17 @@ protected function execute(InputInterface $input, OutputInterface $output): int
             );
             // Refresh fork data after setup so branches are populated.
             $fork = $action($this->nid);
+        } else {
+            // Remote already exists; fetch to ensure tracking refs are up-to-date.
+            $fetchProcess = new Process(['git', 'fetch', $fork->remoteName]);
+            $fetchProcess->run();
+            if (!$fetchProcess->isSuccessful()) {
+                $fetchOutput = trim($fetchProcess->getErrorOutput() . $fetchProcess->getOutput());
+                $this->stdErr->writeln(
+                    sprintf('<error>Failed to fetch remote %s: %s</error>', $fork->remoteName, $fetchOutput)
+                );
+                return 1;
+            }
         }
 
         // Filter branches to those starting with the issue NID.