https://www.gitbet.dev/

I used Sourcetree for about 7 years on macOS and Windows. When I switched to Linux, I found it isn’t available, and none of the alternatives had the layout and UX I liked.

I kept it small on purpose, I don't plan to add many features. Builds for Linux, mac os, and windows. Happy to hear some feedback and share if it's useful to other developers too.