Revert "co previous branch"

This reverts commit 78e8a9ee.

.gitlab-ci.yml

@@ -55,7 +55,7 @@ save:commitIndex:
     - git checkout -b tmpBranch || true
     - git add --all || true
     - git commit -m "Update index" || true
-    - git checkout - || true
+    - git checkout $CI_COMMIT_REF_NAME || true
     - git pull origin $CI_COMMIT_REF_NAME
     - git merge tmpBranch --ff || true
     - git push origin $CI_COMMIT_REF_NAME || true