Run it from the portable bundle that you can find at https://www.syntevo.com/smartgit/download/

It will run emulated. And I don't see it being ported to Native anytime soon :( We already have OpenJDK running natively on ARM64, but I saw this when I was helping the SWT toolkit getting running on ARM64 (SmartGit also uses SWT): https://github.com/eclipse-platform/eclipse.platform.swt/pull/1048#issuecomment-1994365705