From 5c68c2c86d837682e29562ea5a87871b67a57b85 Mon Sep 17 00:00:00 2001
From: Jordi Boggiano <j.boggiano@seld.be>
Date: Wed, 22 Jun 2022 08:50:55 +0200
Subject: [PATCH] Fix case where branches cannot be listed in GitDownloader,
 fixes #10888

---
 src/Composer/Downloader/GitDownloader.php | 4 ++--
 src/Composer/Util/AuthHelper.php          | 6 +++---
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/Composer/Downloader/GitDownloader.php b/src/Composer/Downloader/GitDownloader.php
index 33ff7922a..2866ae59d 100644
--- a/src/Composer/Downloader/GitDownloader.php
+++ b/src/Composer/Downloader/GitDownloader.php
@@ -458,7 +458,7 @@ class GitDownloader extends VcsDownloader implements DvcsDownloaderInterface
         // check whether non-commitish are branches or tags, and fetch branches with the remote name
         $gitRef = $reference;
         if (!Preg::isMatch('{^[a-f0-9]{40}$}', $reference)
-            && $branches
+            && null !== $branches
             && Preg::isMatch('{^\s+composer/'.preg_quote($reference).'$}m', $branches)
         ) {
             $command = sprintf('git checkout '.$force.'-B %s %s -- && git reset --hard %2$s --', ProcessExecutor::escape($branch), ProcessExecutor::escape('composer/'.$reference));
@@ -470,7 +470,7 @@ class GitDownloader extends VcsDownloader implements DvcsDownloaderInterface
         // try to checkout branch by name and then reset it so it's on the proper branch name
         if (Preg::isMatch('{^[a-f0-9]{40}$}', $reference)) {
             // add 'v' in front of the branch if it was stripped when generating the pretty name
-            if (!Preg::isMatch('{^\s+composer/'.preg_quote($branch).'$}m', $branches) && Preg::isMatch('{^\s+composer/v'.preg_quote($branch).'$}m', $branches)) {
+            if (null !== $branches && !Preg::isMatch('{^\s+composer/'.preg_quote($branch).'$}m', $branches) && Preg::isMatch('{^\s+composer/v'.preg_quote($branch).'$}m', $branches)) {
                 $branch = 'v' . $branch;
             }
 
diff --git a/src/Composer/Util/AuthHelper.php b/src/Composer/Util/AuthHelper.php
index 305746f17..71019803c 100644
--- a/src/Composer/Util/AuthHelper.php
+++ b/src/Composer/Util/AuthHelper.php
@@ -192,9 +192,9 @@ class AuthHelper
             // fail if the console is not interactive
             if (!$this->io->isInteractive()) {
                 if ($statusCode === 401) {
-                    $message = "The '" . $url . "' URL required authentication.\nYou must be using the interactive console to authenticate";
+                    $message = "The '" . $url . "' URL required authentication (HTTP 401).\nYou must be using the interactive console to authenticate";
                 } elseif ($statusCode === 403) {
-                    $message = "The '" . $url . "' URL could not be accessed: " . $reason;
+                    $message = "The '" . $url . "' URL could not be accessed (HTTP 403): " . $reason;
                 } else {
                     $message = "Unknown error code '" . $statusCode . "', reason: " . $reason;
                 }
@@ -210,7 +210,7 @@ class AuthHelper
                     return array('retry' => true, 'storeAuth' => false);
                 }
 
-                throw new TransportException("Invalid credentials for '" . $url . "', aborting.", $statusCode);
+                throw new TransportException("Invalid credentials (HTTP $statusCode) for '$url', aborting.", $statusCode);
             }
 
             $this->io->writeError('    Authentication required (<info>'.$origin.'</info>):');