Force tag to update to latest head.

ci/deploy.gitlab-ci.yml

@@ -2,13 +2,16 @@
 deploy:tag:
   stage: deploy
   image: ubuntu:latest
+  variables:
+    GIT_STRATEGY: "clone"
   before_script:
     - export DEBIAN_FRONTEND=noninteractive
     - apt-get update -y
     - apt-get install -y --no-install-recommends git
   script:
-    - git tag nightly master
-    - git push $EIGEN_CI_GIT_PUSH_URL master tag nightly
+    - git status
+    - git tag -f nightly $CI_COMMIT_BRANCH
+    - git push $EIGEN_CI_GIT_PUSH_URL $CI_COMMIT_BRANCH tag nightly
   tags:
     - linux
     - eigen-runner