Prominent new features of Git 2.11 include the ability to print longer abbreviated SHA-1 (Secure Hash Algorithm 1) names, along with the implementation of new tools for handling obscure short SHA-1s, faster accessing of delta chains in the object database, thus adding a layer of performance to most, if not all common operations. Git 2.11 also introduces multiple performance optimizations to object lookups, especially when dealing with multiple packfiles, makes the calculation of “patch IDs” used by the “git rebase” command a lot faster than before, and implements a more complex protocol capable of filtering numerous files with a single process.