1 files changed, 1 insertions, 1 deletions
diff --git a/reset.c b/reset.c
index b22b1be792..bb59027181 100644
--- a/reset.c
+++ b/reset.c
@@ -80,7 +80,7 @@ static int update_refs(const struct reset_head_opts *opts,
 	}
 	if (!ret && run_hook)
 		run_hooks_l(the_repository, "post-checkout",
-			    oid_to_hex(head ? head : null_oid()),
+			    oid_to_hex(head ? head : null_oid(the_hash_algo)),
 			    oid_to_hex(oid), "1", NULL);
 	strbuf_release(&msg);
 	return ret;