diff --git a/www/webhooks/github.php b/www/webhooks/github.php
index fda9b0c8..bf2f1caf 100644
--- a/www/webhooks/github.php
+++ b/www/webhooks/github.php
@@ -5,6 +5,7 @@ use function Safe\substr;
 use function Safe\file_get_contents;
 use function Safe\preg_replace;
 use function Safe\json_decode;
+use function Safe\glob;
 
 // Get a semi-random ID to identify this request within the log.
 $requestId = substr(sha1(time() . rand()), 0, 8);
@@ -61,8 +62,16 @@ try{
 			$dir = REPOS_PATH . '/' . $repoName . '.git/';
 
 			// Confirm we're looking at a Git repo in our filesystem
-			if(!file_exists($dir . "HEAD")){
-				throw new WebhookException('Couldn\'t find repo "' . $repoName . '" in filesystem at "' . $dir . '".', $post);
+			if(!file_exists($dir . 'HEAD')){
+				// We might be looking for a repo whose name is so long, it was truncated for GitHub. Try to check that here by simply globbing the rest.
+				$dirs = glob(REPOS_PATH . '/' . $repoName . '*');
+				if(sizeof($dirs) == 1){
+					$dir = rtrim($dirs[0], '/') . '/';
+				}
+
+				if(!file_exists($dir . 'HEAD')){
+					throw new WebhookException('Couldn\'t find repo "' . $repoName . '" in filesystem at "' . $dir . '".', $post);
+				}
 			}
 
 			Logger::WriteGithubWebhookLogEntry($requestId, 'Processing ebook "' . $repoName . '" located at "' . $dir . '".');