fix: 🐛 correct remote branch reference in merge-base check

Author: tomgrv

src/gitutils/_git-release-prod.sh

@@ -55,7 +55,7 @@ if ! git fetch $(git remote) >/dev/null 2>&1; then
 fi
 
 # Ensure main branch is up-to-date
-if ! git merge-base --is-ancestor $(git rev-parse $flow/$name) $(git rev-parse $(git symbolic-ref refs/remotes/$(git remote)/$flow/$name)) ; then
+if ! git merge-base --is-ancestor $(git rev-parse $flow/$name) $(git rev-parse refs/remotes/$(git remote)/$flow/$name) ; then
     zz_log e "$flow/$name branch is not up-to-date with remote. Please pull the latest changes."
     exit 1
 fi