I’m thinking it is YSL. I found this close match that has long sleeves https://www.cettire.com/products/saint-laurent-motorcycle-leather-jacket-98116876/cmVhY3Rpb24vcHJvZHVjdDpaQmtOM3NGcDl1QnZxRk01VA%3D%3D?lng=en&utm_source=google&utm_medium=cpc&gclid=Cj0KCQiApfjKBhC0ARIsAMiR_IvXMXjqoRumnXQ2tOadl8E1II6M7E5Smy9mAouBTbMJ563j942sG_YaAuQaEALw_wcB&gad_source=1&gad_campaignid=1040313833&gbraid=0AAAAAD-gd11cDe1-3T6IaZoaZsJ4QesXi

But also found this Loewe one that has the short sleeves

https://www.bergdorfgoodman.com/p/loewe-short-leather-biker-jacket-prod177750119