Revert "Pass correct tag target to post-receive hook when creating tag via UI"

This reverts commit ae51774b.

app/models/repository.rb

@@ -196,18 +196,11 @@ class Repository
 
     options = { message: message, tagger: user_to_committer(user) } if message
 
-    rugged.tags.create(tag_name, target, options)
-    tag = find_tag(tag_name)
-
-    GitHooksService.new.execute(user, path_to_repo, oldrev, tag.target, ref) do
-      # we already created a tag, because we need tag SHA to pass correct
-      # values to hooks
+    GitHooksService.new.execute(user, path_to_repo, oldrev, target, ref) do
+      rugged.tags.create(tag_name, target, options)
     end
 
-    tag
-  rescue GitHooksService::PreReceiveError
-    rugged.tags.delete(tag_name)
-    raise
+    find_tag(tag_name)
   end
 
   def rm_branch(user, branch_name)

spec/models/repository_spec.rb

@@ -1303,28 +1303,6 @@ describe Repository, models: true do
         repository.add_tag(user, '8.5', 'master', 'foo')
       end
 
-      it 'does not create a tag when a pre-hook fails' do
-        allow_any_instance_of(Gitlab::Git::Hook).to receive(:trigger).and_return([false, ''])
-
-        expect do
-          repository.add_tag(user, '8.5', 'master', 'foo')
-        end.to raise_error(GitHooksService::PreReceiveError)
-
-        repository.expire_tags_cache
-        expect(repository.find_tag('8.5')).to be_nil
-      end
-
-      it 'passes tag SHA to hooks' do
-        spy = GitHooksService.new
-        allow(GitHooksService).to receive(:new).and_return(spy)
-        allow(spy).to receive(:execute).and_call_original
-
-        tag = repository.add_tag(user, '8.5', 'master', 'foo')
-
-        expect(spy).to have_received(:execute).
-          with(anything, anything, anything, tag.target, anything)
-      end
-
       it 'returns a Gitlab::Git::Tag object' do
         tag = repository.add_tag(user, '8.5', 'master', 'foo')