Git 2.33 brings the latest patches around geometric repacking, "merge-ort" as a new merge strategy for handling Git merges across branches, and a number of bitmap-related optimizations. There is also the usual assortment of fixes and smaller items.
Git's new merge-ort strategy is a scratch rewrite of its recursive strategy but addresses correctness and performance problems. GitHub reports merge-ort can be as much as a "500x" speed-up for large merges with many renames. Merge-ort for merges in a re-base operation can be a speed-up of over 9000x. The new merge-ort should perform consistently faster than the existing merge code.
More details on the changes with Git 2.33 can be found via the highlights on the GitHub blog .
The Git 2.33 announcement with changes in full can be found via the kernel mailing list .