David Bremner: A topgit testimonial, So your topgit patch was merged upstream, more.
Pete Hopkins: topgit Means Never Having to Wait for Reviews
Christoph Egger: Git repository's and topgit

We're using this for some packages, where we're maintaining long-lived development branches, for example glibc. The latter one has usage examples, too.

Installing

It's fairly easy to install topgit.

You can simply installing from your distribution.

Alternatively, you can install it from source.

First, clone the git repo of topgit.

$ git clone https://repo.or.cz/topgit.git
$ cd topgit

Or download the tarball of source code directly and unpack it.

$ curl -o topgit.tar.gz https://repo.or.cz/topgit.git/snapshot/f2815f4debdb07f86ee86dd4eb75280919ace55d.tar.gz
$ tar xzf topgit.tar.gz
$ cd topgit-f2815f4

Second, you have to build and install topgit with make. You can use any prefix to specify the install place. But note that, if you don't set prefix, it will default to $HOME rather than $HOME/.local, which may NOT be what you want.

$ make prefix=$HOME/.local install

The topgit executable file is tg. It will be installed into $prefix/bin.

Finally, add $prefix/bin to your PATH if you want to use tg directly in your shell. Then test the installation by running tg and check the output.

$ tg
TopGit v0.9 - A different patch queue manager
Usage: tg [...]

Running it on GNU/Hurd

Nothing special to that, technically, only that our I/O system's (non-) performance will render this unbearably slow for anything but simple test cases. So don't try to run it on the GCC or glibc repositories. Talk to tschwinge about how he's using it on a GNU/Linux machine and push the resulting trees to GNU/Hurd systems.