Merge branch '22271-drone-tag-pipeline-build' into 'master'

Fix lightweight tags not processed correctly by GitTagPushService

## What does this MR do?

Fix lightweight tags not processed correctly by GitTagPushService

## Are there points in the code the reviewer needs to double check?

No

## Why was this MR needed?

Lightweight tags were being processed incorrectly, causing tag triggers to receive wrong information and not function properly.

## Does this MR meet the acceptance criteria?

- [ ] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- [ ] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- [ ] API support added
- Tests
  - [ ] Added for this feature/bug
  - [ ] All builds are passing
- [ ] Conform by the [merge request performance guides](http://docs.gitlab.com/ce/development/merge_request_performance_guidelines.html)
- [ ] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [ ] Branch has no merge conflicts with `master` (if you do - rebase it please)
- [ ] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

## What are the relevant issue numbers?


Closes #22271

See merge request !6532

2 files changed, 3 insertions, 3 deletions

diff --git a/lib/api/entities.rb b/lib/api/entities.rb
index feaa0c213bf..ab9d2d54f4b 100644
--- a/lib/api/entities.rb
+++ b/lib/api/entities.rb
@@ -138,7 +138,7 @@ module API
       expose :name
 
       expose :commit do |repo_branch, options|
-        options[:project].repository.commit(repo_branch.target)
+        options[:project].repository.commit(repo_branch.dereferenced_target)
       end
 
       expose :protected do |repo_branch, options|
@@ -523,7 +523,7 @@ module API
       expose :name, :message
 
       expose :commit do |repo_tag, options|
-        options[:project].repository.commit(repo_tag.target)
+        options[:project].repository.commit(repo_tag.dereferenced_target)
       end
 
       expose :release, using: Entities::Release do |repo_tag, options|
diff --git a/lib/gitlab/data_builder/push.rb b/lib/gitlab/data_builder/push.rb
index 4f81863da35..d76aa38f741 100644
--- a/lib/gitlab/data_builder/push.rb
+++ b/lib/gitlab/data_builder/push.rb
@@ -83,7 +83,7 @@ module Gitlab
           tag = repository.find_tag(tag_name)
 
           if tag
-            commit = repository.commit(tag.target)
+            commit = repository.commit(tag.dereferenced_target)
             commit.try(:sha)
           end
         else