This is a new redesign of Mercy's hair, made for better and more natural physics and increased model compatibility. There are one set of bangs and two different styles for the back - ponytail or loose - as shown above. Hair settings have been lowered to help with performance.
I made this style after checking out @Denngar's version of Mercy (used in the screenshots with some edits to the eyes I made). You can grab their version on the hub here: https://hub.virtamate.com/resources/mercy-look.2253/
If you want the outfit, you can check out NoOC's releases here: https://www.patreon.com/posts/links-to-works-30720232
You can grab this hairstyle on the hub here: https://hub.virtamate.com/resources/mercy-hair-hd.2487/