Fix ApplyObjectIT.shouldApplyRefMetaObject test for apply object

Use the correct commit SHA1 when simulating the apply-object
REST-API call on '/meta' refs.

Change-Id: I1a17b9b552541295ea9e185a091b11f373729930

src/test/java/com/googlesource/gerrit/plugins/replication/pull/fetch/ApplyObjectIT.java

diff --git a/src/test/java/com/googlesource/gerrit/plugins/replication/pull/fetch/ApplyObjectIT.java b/src/test/java/com/googlesource/gerrit/plugins/replication/pull/fetch/ApplyObjectIT.java
index b24d1d7..0f063a4 100644
--- a/src/test/java/com/googlesource/gerrit/plugins/replication/pull/fetch/ApplyObjectIT.java
+++ b/src/test/java/com/googlesource/gerrit/plugins/replication/pull/fetch/ApplyObjectIT.java
@@ -78,8 +78,7 @@
     String refName = RefNames.changeMetaRef(pushResult.getChange().getId());
 
     Optional<RevisionData> revisionData =
-        reader.read(
-            Project.nameKey(testRepoProjectName), pushResult.getCommit().toObjectId(), refName);
+        reader.read(Project.nameKey(testRepoProjectName), refName);
 
     RefSpec refSpec = new RefSpec(refName);
     objectUnderTest.apply(project, refSpec, revisionData.get());