diff --git a/tools/tools/git/git-arc.sh b/tools/tools/git/git-arc.sh
--- a/tools/tools/git/git-arc.sh
+++ b/tools/tools/git/git-arc.sh
@@ -342,7 +342,8 @@
     for chash in "$@"; do
         _commits=$(git rev-parse "${chash}")
         if ! git cat-file -e "${chash}"'^{commit}' >/dev/null 2>&1; then
-            _commits=$(git rev-list "$_commits" | tail -r)
+            # shellcheck disable=SC2086
+            _commits=$(git rev-list $_commits | tail -r)
         fi
         [ -n "$_commits" ] || err "invalid commit ID ${chash}"
         commits="$commits $_commits"