diff --git a/lib/datasource/git-tags/index.js b/lib/datasource/git-tags/index.js
index f1f5c03a4c1748c1f2755dd70335f2dcba7f3c69..7baf90a69018985703360db31538783983918992 100644
--- a/lib/datasource/git-tags/index.js
+++ b/lib/datasource/git-tags/index.js
@@ -6,6 +6,7 @@ const cacheMinutes = 10;
 async function getPkgReleases({ lookupName }) {
   try {
     const cachedResult = await renovateCache.get(cacheNamespace, lookupName);
+    // istanbul ignore if
     if (cachedResult) return cachedResult;
 
     const info = await getRemoteInfo({