elpa-git-commit software package provides Major mode for edditing git commit message, you can install in your Ubuntu 16.10 (Yakkety Yak) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install elpa-git-commit
elpa-git-commit is installed in your system.
Make ensure the elpa-git-commit package were installed using the commands given below,
$ sudo dpkg-query -l | grep elpa-git-commit *
You will get with elpa-git-commit package name, version, architecture and description in a table
| Distro | Ubuntu 16 10 yakkety yak |
| Section | Version Control Systems |
| Package | elpa-git-commit |
| Version | 2.7.0-1 |
| Description | Major mode for edditing git commit message |
| Sub Section | vcs |