Use Mercurial with Redmine
Redmine only works with Mercurial repositories cloned in your local machine, as explained in the official guide.
Install the Mercurial package:
$ sudo apt-get install mercurial
$ sudo installdir/ctlscript.sh restart
Create the repository directory, clone it and give it the proper permissions:
$ cd $HOME $ mkdir mercurialRepo $ cd mercurialRepo $ sudo hg clone REPO_URL
Add your repository to Redmine by navigating in your project to the “Settings -> Repositories -> New repository” menu. Replace the ID placeholder with a short identifier for the repository, the USER placeholder with the username, and the REPO placeholder with the correct directory name for the cloned repository.
SCM: Mercurial Identifier: ID Path to repository: /home/USER/mercurialRepo/REPO
Check the repository and confirm that you can view the files, commits, comments and so on.