There is a mercurial plugin called hggit that allows you to push and pull to/from a Git remote repository from Hg.

bitbucket.org/durin42/hg-git

This is the Hg-Git plugin for Mercurial, adding the ability to push and pull to/from a Git server repository from Hg. This means you can collaborate on Git based projects from Hg, or use a Git server as a collaboration point for a team with developers using both Git and Hg.

Mercurial (commonly referred to as hg) is a distributed version control system written in Python and is similar in many ways to Git, Bazaar and Darcs.

qt4 and text based Mercurial log navigator
latest published version: 1.10.2

Logilab.org's Debian and Ubuntu repositories
Accessing Debian and Ubuntu repositories to install Logilab's free software.
Installing Logilab.org's software on Debian or Ubuntu

Some of Logilab.org's free software projects are included in Debian (e.g. logilab-common and pylint at least). If your want to get software that is not included in Debian or just get latest releases quicker, add one of these repositories to your /etc/apt/sources.list file.

A: [...] I think this might be related to a more recent version of mercurial unsupported by hgview 1.9.0
Can you try to reproduce with a more recent version of hgview ? https://pypi.org/project/hgview/ (1.10.7 for example). For debian packages you can try out the repo hosted by logilab (no service garantee).

Mononoke is a next-generation server for the Mercurial source control system, meant to scale up to accepting thousands of commits every hour across millions of files. It is primarily written in the Rust programming language.

This article specifically describes migration of project from BitBucket’s Mercurial repository (original) to GitHub (migrated) using hg-fast-export tool.

Mercurial MIGHT gain the ability to operate on a git repository. I really hope so.

A site by Perforce that will do version control hosting. Includes support for mercurial, and even has a free tier for personal projects.