Function patch_id_add_mode

diff.c:6886–6892

}

static void patch_id_add_mode(struct git_hash_ctx *ctx, unsigned mode)
{
	/* large enough for 2^32 in octal */
	char buf[12];
	int len = xsnprintf(buf, sizeof(buf), "%06o", mode);
	git_hash_update(ctx, buf, len);
}

/* returns 0 upon success, and writes result into oid */
static int diff_get_patch_id(struct diff_options *options, struct object_id *oid, int diff_header_only)