diff --git a/src/main/scala/gitbucket/core/controller/ApiController.scala b/src/main/scala/gitbucket/core/controller/ApiController.scala
index d118fa4..19d5bbf 100644
--- a/src/main/scala/gitbucket/core/controller/ApiController.scala
+++ b/src/main/scala/gitbucket/core/controller/ApiController.scala
@@ -175,7 +175,7 @@
     using(Git.open(getRepositoryDir(params("owner"), params("repo")))) { git =>
       //JsonFormat( (revstr, git.getRepository().resolve(revstr)) )
       // getRef is deprecated by jgit-4.2. use exactRef() or findRef()
-      val sha = git.getRepository().getRef(revstr).getObjectId().name()
+      val sha = git.getRepository().exactRef(revstr).getObjectId().name()
       JsonFormat(ApiRef(revstr, ApiObject(sha)))
     }
   })