There have been several new and updated packages in Galactic since the last sync, and it’s time to sync those new features and fixes to the main apt and dnf repositories.
The commit that you point to has been merged into the galactic development branch, but a new release from that branch has not been made since 0.9.1
Binary packages included inthe syncs are based upon the released version not the tip of development. So a new release of rosbag2 needs to be made and packaged for it to be built into binaries that you’ll see in the sync.
If there’s something that you’re urgently waiting for to become available in the binary packages. I suggest that you open an issue and politely request a release on the repository so that the maintainer(s) know a new release would be valuable for you.