diff -u b/core/tests/Drupal/BuildTests/Composer/Template/ComposerProjectTemplatesTest.php b/core/tests/Drupal/BuildTests/Composer/Template/ComposerProjectTemplatesTest.php
--- b/core/tests/Drupal/BuildTests/Composer/Template/ComposerProjectTemplatesTest.php
+++ b/core/tests/Drupal/BuildTests/Composer/Template/ComposerProjectTemplatesTest.php
@@ -32,7 +32,7 @@
    *
    * @see https://getcomposer.org/doc/04-schema.md#minimum-stability
    */
-  protected const MINIMUM_STABILITY = 'stable';
+  protected const MINIMUM_STABILITY = 'alpha';
 
   /**
    * The order of stability strings from least stable to most stable.
@@ -413,8 +413,8 @@
         // If the current version is developing towards an x.y.0 release, there
         // might be tagged pre-releases. If there are, the latest one
         // determines the current stability of the branch.
-        $version_pattern = substr($version, 0, -3) . '*';
-        $process = $this->executeCommand("git tag -l \"$version_pattern\" --sort=-refname | head -1");
+        $version_pattern = str_replace('-dev', '-*', $version);
+        $process = $this->executeCommand("git tag -l \"$version_pattern\" --sort=-refname | head -1", $this->getDrupalRoot());
         $this->assertCommandSuccessful();
         $latest_tag = trim($process->getOutput());
         if ($latest_tag !== '') {