Hello,

I'd like to propose to include the functionality of "this":https://github.com/mikoto20000/redmine_git_branch_hook seemingly unmaintained Plugin into mainline. Since nowadays git-flow and similar approaches are common and this would be an easy way to prevent the issue of forgotten @refs …@ in commit-messages.
This is in no way limited to git. Same applies for other SCMs

So to summarize I'd like to propose:

• getting related ticket by branch-name ** additional tickets can still be referenced by adding them to the message ** additional actions can still be performed using the message
• closing issues on merge