GitHub Desktop uses octicons, but doesn't inherit updates, instead they're duplicated into the Desktop code base. There are icons that are unique to Desktop:
- Stash: Uses the octicon for ‘modified’ but made to appear stacked
- Commit co-author: Person with plus sign
- Avatar default: The old version (a filled in silhouette with rounded container) is used instead of the newer outlined style due to the context
- Force push icon: Push arrow with outline of two more arrows to make it look more extreme
- Repo force push: Repo with arrow with triple outline above

Some older octicons have also been used in the illustrations (check mark, question mark, ufo with speech bubble with telescope, planet with thumbs up).