Not able to push annotated tags to git repository

(tqtc-coin-ci) 11:34:52~/tqtc-coin-ci (1.2) $ git tag -a -m "Tag Coin revision v1.2.1" v1.2.1 HEAD
(tqtc-coin-ci) 11:37:22~/tqtc-coin-ci (1.2) $ git push origin v1.2.1:refs/tags/v1.2.1
Counting objects: 5, done.
Delta compression using up to 8 threads.
Compressing objects: 100% (5/5), done.
Writing objects: 100% (5/5), 1.84 KiB | 236.00 KiB/s, done.
Total 5 (delta 3), reused 0 (delta 0)
remote: Resolving deltas: 100% (3/3)
remote: error: branch refs/tags/v1.2.1:
remote: use a SHA1 visible to you, or get update permission on the ref
remote: User: aakeskimo
remote: Contact an administrator to fix the permissions
remote: Processing changes: refs: 1, done    
To ssh://codereview.qt-project.org/qtqa/tqtc-coin-ci
 ! [remote rejected]   v1.2.1 -> v1.2.1 (prohibited by Gerrit: update for creating new commit object not permitted)
error: failed to push some refs to 'ssh://codereview.qt-project.org/qtqa/tqtc-coin-ci'