Showing Default Branch at the top
Under Local & Remote, Keep Default branch for the repo at the top of branch list.
Related to, but limited for minimal change to just elevate default branch without pinning support.
https://feedback.gitkraken.com/suggestions/347190/add-favorite-or-pinned-branches-in-the-left-sidebar
https://feedback.gitkraken.com/suggestions/191603/pin-branch-to-left-in-the-graph