无法从GitLab仓库清理冗余大文件，推送仍遭拒绝

按照GitLab文档使用git filter-repo命令清理当前分支的冗余大文件，同时移除了.gitattributes中对应大文件的配置行，但推送修改时仍收到大小超限错误：

batch response: Your push has been rejected, because this repository has exceeded its size limit of 10 GiB by 2.7 GiB. Please contact your GitLab administrator for more information

终端操作及输出如下：

$ git filter-repo --strip-blobs-bigger-than 5M --prune-degenerate always --force
Processed 2862 blob sizes
Parsed 491 commits
New history written in 0.64 seconds; now repacking/cleaning...
Repacking your repo and cleaning out old unneeded objects
HEAD is now at aeh9h85 Added model files to model folder
Enumerating objects: 6102, done.
Counting objects: 100% (6102/6102), done.
Delta compression using up to 4 threads
Compressing objects: 100% (2080/2080), done.
Writing objects: 100% (6102/6102), done.
Total 6102 (delta 3871), reused 6071 (delta 3844), pack-reused 0
Completely finished after 1.35 seconds.
$ git remote -v
$ git remote add origin https://gitlab.com/xxx/internal/yy/test.git
$ git remote -v
origin  https://gitlab.com/xxx/internal/yy/test.git (fetch)
origin  https://gitlab.com/xxx/internal/yy/test.git (push)
$ git push --set-upstream origin test-changes -f
batch response: Your push has been rejected, because this repository has exceeded its size limit of 10 GiB by 2.7 GiB. Please contact your GitLab administrator for more information.                                                         
error: failed to push some refs to 'https://gitlab.com/xxx/internal/yy/test.git'

• 确认本地仓库实际大小
  执行命令检查本地仓库占用空间，验证git filter-repo是否生效：

  du -sh .git
  

  如果大小仍接近12.7GiB，说明过滤未生效，可能是大文件存在于其他分支/标签中。

• 清理所有分支和标签的大文件
  仅清理当前分支无法解决问题，需对所有分支、标签执行过滤：

  # 列出所有本地分支
  git branch -a
  # 逐个切换分支执行过滤
  git checkout <branch-name>
  git filter-repo --strip-blobs-bigger-than 5M --prune-degenerate always --force
  

  处理标签：

  git tag
  git checkout <tag-name>
  git filter-repo --strip-blobs-bigger-than 5M --prune-degenerate always --force
  git tag -f <tag-name>
  

• 彻底清理本地冗余对象
  过滤完成后，清除本地未引用的历史对象：

  git reflog expire --expire=now --all
  git gc --prune=now --aggressive
  

• 清理Git LFS残留对象
  移除本地LFS配置并推送删除操作：

  git lfs rm --all
  git push origin --force --all
  git push origin --force --tags
  

• 联系GitLab管理员
  若以上操作后仍报错，说明远程仓库的历史未引用对象未被清理（GitLab不会自动触发垃圾回收），需管理员协助清理冗余空间。

内容的提问来源于stack exchange，提问作者vinod827