From ab987941ac27b4aeb97a890eba950d4fce1eb507 Mon Sep 17 00:00:00 2001
From: Rhys Arkins <rhys@arkins.net>
Date: Thu, 9 Jul 2020 07:26:22 +0200
Subject: [PATCH] fix(github): delete fork after patch failure

---
 lib/platform/github/index.ts | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/lib/platform/github/index.ts b/lib/platform/github/index.ts
index 32a0431ed523da..8811189921db3b 100644
--- a/lib/platform/github/index.ts
+++ b/lib/platform/github/index.ts
@@ -380,15 +380,19 @@ export async function initRepo({
           }
         );
       } catch (err) /* istanbul ignore next */ {
+        logger.debug(
+          'Error updating fork reference - will try deleting fork to try again next time'
+        );
+        try {
+          await githubApi.deleteJson(`repos/${config.repository}`);
+          logger.info('Fork deleted');
+        } catch (deleteErr) {
+          logger.warn({ err: deleteErr }, 'Could not delete fork');
+        }
         if (err instanceof ExternalHostError) {
           throw err;
         }
-        if (
-          err.statusCode === 422 &&
-          err.message.startsWith('Object does not exist')
-        ) {
-          throw new Error(REPOSITORY_CHANGED);
-        }
+        throw new ExternalHostError(err);
       }
     } else {
       logger.debug({ repository_fork: config.repository }, 'Created fork');