fix release branch detection for tag builds

Author: ylembachar

.circleci/config.yml

@@ -224,7 +224,8 @@ jobs:
             else
               if [[ -z $CIRCLE_BRANCH ]]; then
                 BRANCHES=$(git branch -a --contains tags/$CIRCLE_TAG)
-                CIRCLE_BRANCH=${BRANCHES##*/}
+                CIRCLE_BRANCH=$(echo "$BRANCHES" | grep -Eo '(release/v[0-9]+\.[0-9]+(\.[0-9]+)?$|main$)' | head -n1)
+                CIRCLE_BRANCH=${CIRCLE_BRANCH:-${BRANCHES##*/}}
                 echo "CIRCLE_BRANCH is empty, trying to set it from git, result: $CIRCLE_BRANCH"
               fi
               if [[ $CIRCLE_BRANCH != "main" && \