gtm
Simple, seamless, lightweight time tracking for Git
...Simply install a plugin for your favorite editor and the GTM command line utility to start tracking your time now. When you are ready, commit your work like you usually do. GTM will automatically save the time spent associated with your commit. To check the time of the last commit type gtm report. GTM provides git aliases to make this easy. It defaults to origin for the remote repository. Time data can be retrieved from the remote repository by fetching.