Expire repository exists? and has_visible_content? caches after a push if necessary

Closes #17012

CHANGELOG

@@ -20,6 +20,7 @@ v 8.8.0 (unreleased)
   - Improve description for the Two-factor Authentication sign-in screen. (Connor Shea)
   - API support for the 'since' and 'until' operators on commit requests (Paco Guzman)
   - Fix Gravatar hint in user profile when Gravatar is disabled. !3988 (Artem Sidorenko)
+  - Expire repository exists? and has_visible_content? caches after a push if necessary
 
 v 8.7.3
   - Emails, Gitlab::Email::Message, Gitlab::Diff, and Premailer::Adapter::Nokogiri are now instrumented

app/services/git_push_service.rb

@@ -17,6 +17,7 @@ class GitPushService < BaseService
   #  6. Checks if the project's main language has changed
   #
   def execute
+    @project.repository.after_create if @project.empty_repo?
     @project.repository.after_push_commit(branch_name, params[:newrev])
 
     if push_remove_branch?

app/services/git_tag_push_service.rb

@@ -2,6 +2,7 @@ class GitTagPushService < BaseService
   attr_accessor :push_data
 
   def execute
+    project.repository.after_create if project.empty_repo?
     project.repository.before_push_tag
 
     @push_data = build_push_data