1 files changed, 1 insertions, 1 deletions
diff --git a/src/libfetchers/github.cc b/src/libfetchers/github.cc
index 8675a5a66..0bee1d6b3 100644
--- a/src/libfetchers/github.cc
+++ b/src/libfetchers/github.cc
@@ -76,7 +76,7 @@ struct GitHubInput : Input
                 readFile(
                     store->toRealPath(
                         downloadFile(store, url, "source", false).storePath)));
-            rev = Hash(json["sha"], htSHA1);
+            rev = Hash(std::string { json["sha"] }, htSHA1);
             debug("HEAD revision for '%s' is %s", url, rev->gitRev());
         }