Git Redmine Suite is a complete solution to manage the development with redmine from git command line.
No more need to spend time in redmine, GRS do it for you.
It speed up the developer tasks (start and finish a task)
It also simplify the review and release process.
Here a link to fully setup this amazing tool :
Git Redmine Suite is a complete tools that allow you to link your git repositories and your redmine installation.