diff --git a/sequencer.c b/sequencer.c
index 0c8dec4992..ca1961c0f0 100644
--- a/sequencer.c
+++ b/sequencer.c
@@ -713,6 +713,8 @@ static int read_and_refresh_cache(struct replay_opts *opts)
 struct todo_item {
 	enum todo_command command;
 	struct commit *commit;
+	const char *arg;
+	int arg_len;
 	size_t offset_in_buf;
 };
 
@@ -764,6 +766,9 @@ static int parse_insn_line(struct todo_item *item, const char *bol, char *eol)
 	status = get_sha1(bol, commit_sha1);
 	*end_of_object_name = saved;
 
+	item->arg = end_of_object_name + strspn(end_of_object_name, " \t");
+	item->arg_len = (int)(eol - item->arg);
+
 	if (status < 0)
 		return -1;
 
@@ -905,6 +910,8 @@ static int walk_revs_populate_todo(struct todo_list *todo_list,
 
 		item->command = command;
 		item->commit = commit;
+		item->arg = NULL;
+		item->arg_len = 0;
 		item->offset_in_buf = todo_list->buf.len;
 		subject_len = find_commit_subject(commit_buffer, &subject);
 		strbuf_addf(&todo_list->buf, "%s %s %.*s\n", command_string,