What are some alternatives?
When comparing Mercurial SCM and Git-Repo, you can also consider the following products
Atlassian Bitbucket Server - Atlassian Bitbucket Server is a scalable collaborative Git solution.
pre-commit - A slightly improved pre-commit hook for git
Perforce - Self-hosted Version Control Software
Diff So Fancy - Make Git diffs look good
Visual Studio Team Services - Visual Studio Team Services (VSTS) provides unlimited Git hosting, cloud build for CI, agile planning and continuous delivery.
GVfs - Git Virtual File System (by Microsoft)