diff --git a/modules/dev-env/scripts/rebase.sh b/modules/dev-env/scripts/rebase.sh
index 60078ca..c311adb 100644
--- a/modules/dev-env/scripts/rebase.sh
+++ b/modules/dev-env/scripts/rebase.sh
@@ -311,7 +311,7 @@ cleanup_backups() {
     local deleted=0
     while IFS=: read -r path _; do
         cd "$path" || continue
-        git branch --list "backup/*" 2>/dev/null | while read -r branch; do
+        while read -r branch; do
             branch="$(echo "$branch" | tr -d ' *')"
             local bdate
             bdate="$(echo "$branch" | grep -oE '[0-9]{8}' | head -1)"
@@ -319,7 +319,7 @@ cleanup_backups() {
                || { [[ -n "$bdate" ]] && [[ "$bdate" < "$cutoff" ]]; }; then
                 git branch -D "$branch" 2>/dev/null && deleted=$((deleted + 1)) || true
             fi
-        done
+        done < <(git branch --list "backup/*" 2>/dev/null)
     done < <(find_forked_repos)
     success "Deleted $deleted backup branch(es)."
 }