GitKraken has a Jira integration panel. Here's how it actually compares to a CLI-first workflow.
GitKraken does have a Jira integration built in, so it's probably the closest existing tool to what Jitly does. You can see your Jira board inside the GUI and there's some drag-and-drop stuff tying commits to issues.
The difference for me is mostly about staying in the terminal. If you already live in a GUI git client all day, GitKraken's integration might genuinely be enough. But if you're someone who does everything from terminal and only opens a browser when you absolutely have to, switching to a heavy GUI just for the Jira link isn't worth it.
GitKraken's Jira integration and a lot of its useful features sit behind a paid plan. Jitly is free and open for personal use, it's just a CLI hitting the Jira API with your own credentials.