Revert "Fix sonar issue"

This reverts commit 0b0df4ed

scm-plugins/scm-git-plugin/src/main/java/sonia/scm/repository/api/GitHookTagProvider.java

@@ -105,6 +105,8 @@ public class GitHookTagProvider implements HookTagProvider {
     final RevObject revObject = revWalk.parseAny(oldId);
     if (revObject instanceof RevTag) {
       return unpeelTag(revWalk, ((RevTag) revObject).getObject());
+    } else if (revObject == null) {
+      return oldId;
     } else {
       return revObject;
     }