commit=$(add_squashed_msg "$rev" "$dir" |
                         git commit-tree $tree $headp -p "$rev") || exit $?
        else
+               revp=$(peel_committish "$rev") &&
                commit=$(add_msg "$dir" "$headrev" "$rev" |
-                        git commit-tree $tree $headp -p "$rev") || exit $?
+                        git commit-tree $tree $headp -p "$revp") || exit $?
        fi
        git reset "$commit" || exit $?