[PATCH v2 2/4] rebase -i: use struct object_id rather than looking up commit

["Phillip Wood via GitGitGadget" <gitgitgadget@gmail.com>]

From: Phillip Wood <phillip.wood@dunelm.org.uk>

We already have a struct object_id containing the oid that we want to
set ORIG_HEAD to so use that rather than converting it to a string and
then calling get_oid() on that string.

Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
---
 builtin/rebase.c |  5 +++--
 sequencer.c      | 10 +++-------
 sequencer.h      |  5 +++--
 3 files changed, 9 insertions(+), 11 deletions(-)

diff --git a/builtin/rebase.c b/builtin/rebase.c
index cd101b2559..4e4a5e774e 100644
--- a/builtin/rebase.c
+++ b/builtin/rebase.c
@@ -370,8 +370,9 @@ static int do_interactive_rebase(struct rebase_options *opts, unsigned flags)
 
 		split_exec_commands(opts->cmd, &commands);
 		ret = complete_action(the_repository, &replay, flags,
-			shortrevisions, opts->onto_name, opts->onto, head_hash,
-			&commands, opts->autosquash, &todo_list);
+			shortrevisions, opts->onto_name, opts->onto,
+			&opts->orig_head, &commands, opts->autosquash,
+			&todo_list);
 	}
 
 	string_list_clear(&commands, 0);
diff --git a/sequencer.c b/sequencer.c
index 00acb12496..f79c3df861 100644
--- a/sequencer.c
+++ b/sequencer.c
@@ -3965,21 +3965,17 @@ static int run_git_checkout(struct repository *r, struct replay_opts *opts,
 
 static int checkout_onto(struct repository *r, struct replay_opts *opts,
 			 const char *onto_name, const struct object_id *onto,
-			 const char *orig_head)
+			 const struct object_id *orig_head)
 {
-	struct object_id oid;
 	const char *action = reflog_message(opts, "start", "checkout %s", onto_name);
 
-	if (get_oid(orig_head, &oid))
-		return error(_("%s: not a valid OID"), orig_head);
-
 	if (run_git_checkout(r, opts, oid_to_hex(onto), action)) {
 		apply_autostash(rebase_path_autostash());
 		sequencer_remove_state(opts);
 		return error(_("could not detach HEAD"));
 	}
 
-	return update_ref(NULL, "ORIG_HEAD", &oid, NULL, 0, UPDATE_REFS_MSG_ON_ERR);
+	return update_ref(NULL, "ORIG_HEAD", orig_head, NULL, 0, UPDATE_REFS_MSG_ON_ERR);
 }
 
 static int stopped_at_head(struct repository *r)
@@ -5314,7 +5310,7 @@ static int skip_unnecessary_picks(struct repository *r,
 
 int complete_action(struct repository *r, struct replay_opts *opts, unsigned flags,
 		    const char *shortrevisions, const char *onto_name,
-		    struct commit *onto, const char *orig_head,
+		    struct commit *onto, const struct object_id *orig_head,
 		    struct string_list *commands, unsigned autosquash,
 		    struct todo_list *todo_list)
 {
diff --git a/sequencer.h b/sequencer.h
index b2a501e445..ea56825488 100644
--- a/sequencer.h
+++ b/sequencer.h
@@ -163,8 +163,9 @@ void todo_list_add_exec_commands(struct todo_list *todo_list,
 				 struct string_list *commands);
 int complete_action(struct repository *r, struct replay_opts *opts, unsigned flags,
 		    const char *shortrevisions, const char *onto_name,
-		    struct commit *onto, const char *orig_head, struct string_list *commands,
-		    unsigned autosquash, struct todo_list *todo_list);
+		    struct commit *onto, const struct object_id *orig_head,
+		    struct string_list *commands, unsigned autosquash,
+		    struct todo_list *todo_list);
 int todo_list_rearrange_squash(struct todo_list *todo_list);
 
 /*
-- 
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