diff --git a/src/Composer/Command/StatusCommand.php b/src/Composer/Command/StatusCommand.php
index 780f70031..5d90b3105 100644
--- a/src/Composer/Command/StatusCommand.php
+++ b/src/Composer/Command/StatusCommand.php
@@ -92,7 +92,7 @@ EOT
         $vcsVersionChanges = [];
 
         $parser = new VersionParser;
-        $guesser = new VersionGuesser($composer->getConfig(), $composer->getLoop()->getProcessExecutor() ?? new ProcessExecutor($io), $parser);
+        $guesser = new VersionGuesser($composer->getConfig(), $composer->getLoop()->getProcessExecutor() ?? new ProcessExecutor($io), $parser, $io);
         $dumper = new ArrayDumper;
 
         // list packages
diff --git a/src/Composer/Downloader/PathDownloader.php b/src/Composer/Downloader/PathDownloader.php
index 8997f561e..f71ea2568 100644
--- a/src/Composer/Downloader/PathDownloader.php
+++ b/src/Composer/Downloader/PathDownloader.php
@@ -224,7 +224,7 @@ class PathDownloader extends FileDownloader implements VcsCapableDownloaderInter
     {
         $path = Filesystem::trimTrailingSlash($path);
         $parser = new VersionParser;
-        $guesser = new VersionGuesser($this->config, $this->process, $parser);
+        $guesser = new VersionGuesser($this->config, $this->process, $parser, $this->io);
         $dumper = new ArrayDumper;
 
         $packageConfig = $dumper->dump($package);
diff --git a/src/Composer/Downloader/VcsDownloader.php b/src/Composer/Downloader/VcsDownloader.php
index a1c5979d5..626bcb5c5 100644
--- a/src/Composer/Downloader/VcsDownloader.php
+++ b/src/Composer/Downloader/VcsDownloader.php
@@ -241,7 +241,7 @@ abstract class VcsDownloader implements DownloaderInterface, ChangeReportInterfa
     public function getVcsReference(PackageInterface $package, string $path): ?string
     {
         $parser = new VersionParser;
-        $guesser = new VersionGuesser($this->config, $this->process, $parser);
+        $guesser = new VersionGuesser($this->config, $this->process, $parser, $this->io);
         $dumper = new ArrayDumper;
 
         $packageConfig = $dumper->dump($package);
diff --git a/src/Composer/Factory.php b/src/Composer/Factory.php
index 3d6d58318..4389c487e 100644
--- a/src/Composer/Factory.php
+++ b/src/Composer/Factory.php
@@ -384,7 +384,7 @@ class Factory
 
         // load package
         $parser = new VersionParser;
-        $guesser = new VersionGuesser($config, $process, $parser);
+        $guesser = new VersionGuesser($config, $process, $parser, $io);
         $loader = $this->loadRootPackage($rm, $config, $parser, $guesser, $io);
         $package = $loader->load($localConfig, 'Composer\Package\RootPackage', $cwd);
         $composer->setPackage($package);
diff --git a/src/Composer/Package/Loader/RootPackageLoader.php b/src/Composer/Package/Loader/RootPackageLoader.php
index 81cb375fc..50807e506 100644
--- a/src/Composer/Package/Loader/RootPackageLoader.php
+++ b/src/Composer/Package/Loader/RootPackageLoader.php
@@ -60,7 +60,7 @@ class RootPackageLoader extends ArrayLoader
 
         $this->manager = $manager;
         $this->config = $config;
-        $this->versionGuesser = $versionGuesser ?: new VersionGuesser($config, new ProcessExecutor($io), $this->versionParser);
+        $this->versionGuesser = $versionGuesser ?: new VersionGuesser($config, new ProcessExecutor($io), $this->versionParser, $io);
         $this->io = $io;
     }
 
diff --git a/src/Composer/Package/Version/VersionGuesser.php b/src/Composer/Package/Version/VersionGuesser.php
index bfc16d524..8a0fe9c14 100644
--- a/src/Composer/Package/Version/VersionGuesser.php
+++ b/src/Composer/Package/Version/VersionGuesser.php
@@ -13,6 +13,7 @@
 namespace Composer\Package\Version;
 
 use Composer\Config;
+use Composer\IO\IOInterface;
 use Composer\Pcre\Preg;
 use Composer\Repository\Vcs\HgDriver;
 use Composer\IO\NullIO;
@@ -50,11 +51,17 @@ class VersionGuesser
      */
     private $versionParser;
 
-    public function __construct(Config $config, ProcessExecutor $process, SemverVersionParser $versionParser)
+    /**
+     * @var IOInterface|null
+     */
+    private $io;
+
+    public function __construct(Config $config, ProcessExecutor $process, SemverVersionParser $versionParser, ?IOInterface $io = null)
     {
         $this->config = $config;
         $this->process = $process;
         $this->versionParser = $versionParser;
+        $this->io = $io;
     }
 
     /**
@@ -178,6 +185,7 @@ class VersionGuesser
                 $prettyVersion = $result['pretty_version'];
             }
         }
+        GitUtil::checkForRepoOwnershipError($this->process->getErrorOutput(), $path, $this->io);
 
         if (!$version || $isDetached) {
             $result = $this->versionFromGitTags($path);
diff --git a/src/Composer/Repository/PathRepository.php b/src/Composer/Repository/PathRepository.php
index 1d9e4e7e0..4e99bd415 100644
--- a/src/Composer/Repository/PathRepository.php
+++ b/src/Composer/Repository/PathRepository.php
@@ -116,7 +116,7 @@ class PathRepository extends ArrayRepository implements ConfigurableRepositoryIn
         $this->loader = new ArrayLoader(null, true);
         $this->url = Platform::expandPath($repoConfig['url']);
         $this->process = $process ?? new ProcessExecutor($io);
-        $this->versionGuesser = new VersionGuesser($config, $this->process, new VersionParser());
+        $this->versionGuesser = new VersionGuesser($config, $this->process, new VersionParser(), $io);
         $this->repoConfig = $repoConfig;
         $this->options = $repoConfig['options'] ?? [];
         if (!isset($this->options['relative'])) {
diff --git a/src/Composer/Repository/Vcs/GitDriver.php b/src/Composer/Repository/Vcs/GitDriver.php
index f3f7a91a6..57bc9b2ef 100644
--- a/src/Composer/Repository/Vcs/GitDriver.php
+++ b/src/Composer/Repository/Vcs/GitDriver.php
@@ -236,6 +236,7 @@ class GitDriver extends VcsDriver
             if ($process->execute('git tag', $output, $url) === 0) {
                 return true;
             }
+            GitUtil::checkForRepoOwnershipError($process->getErrorOutput(), $url);
         }
 
         if (!$deep) {
diff --git a/src/Composer/Util/Git.php b/src/Composer/Util/Git.php
index 58df0ad57..f3369c8aa 100644
--- a/src/Composer/Util/Git.php
+++ b/src/Composer/Util/Git.php
@@ -43,6 +43,20 @@ class Git
         $this->filesystem = $fs;
     }
 
+    /**
+     * @param IOInterface|null $io If present, a warning is output there instead of throwing, so pass this in only for cases where this is a soft failure
+     */
+    public static function checkForRepoOwnershipError(string $output, string $path, ?IOInterface $io = null): void
+    {
+        if (str_contains($output, 'fatal: detected dubious ownership')) {
+            $msg = 'The repository at "' . $path . '" does not have the correct ownership and git refuses to use it:' . PHP_EOL . PHP_EOL . $output;
+            if ($io === null) {
+                throw new \RuntimeException($msg);
+            }
+            $io->writeError('<warning>'.$msg.'</warning>');
+        }
+    }
+
     public function setHttpDownloader(HttpDownloader $httpDownloader): void
     {
         $this->httpDownloader = $httpDownloader;
@@ -317,6 +331,7 @@ class Git
 
             return true;
         }
+        self::checkForRepoOwnershipError($this->process->getErrorOutput(), $dir);
 
         // clean up directory and do a fresh clone into it
         $this->filesystem->removeDirectory($dir);
@@ -384,6 +399,7 @@ class Git
                 return true;
             }
         }
+        self::checkForRepoOwnershipError($this->process->getErrorOutput(), $dir);
 
         return false;
     }