An arrow pointing to the left, with a curved hook at the other end. Similar in appearance to a sideways U Turn symbol, or a reply icon in an email application.
Right Arrow Curving Left was approved as part of Unicode 1.1 in 1993 under the name โLeftwards Arrow with Hookโ and added to Emoji 1.0 in 2015.
โฉ๏ธ Right Arrow Curving Left