ssh: Set git protocol version 2 on SSH ControlMaster

According to https://git-scm.com/docs/protocol-v2#_ssh_and_file_transport,
when using SSH, the environment variable GIT_PROTOCOL must be set
when establishing the connection to the git server.

Normally git does this by itself. But in repo-tool where the SSH
connection is managed by the repo-tool, it must be passed in
explicitly instead.

Under some circumstances of environment configuration, this
caused all repo sync commands over ssh to always use
git protocol version 1. Even when git was configured to use
version 2.

Using git protocol v2 can significantly improve fetch speeds,
since it uses server side filtering of refs, reducing the
amount of unneccessary objects to send.

Change-Id: I6d4c3b7300a6090d707480b1a638ed03622fa71a
Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/411362
Tested-by: Erik Elmeke <erik@haleytek.corp-partner.google.com>
Reviewed-by: Mike Frysinger <vapier@google.com>
Commit-Queue: Erik Elmeke <erik@haleytek.corp-partner.google.com>
1 file changed
tree: 7d6ba67193c8a4972280c4b16fb571099ad4ce2a
  1. .github/
  2. docs/
  3. hooks/
  4. man/
  5. release/
  6. subcmds/
  7. tests/
  8. .flake8
  9. .gitattributes
  10. .gitignore
  11. .gitreview
  12. .isort.cfg
  13. .mailmap
  14. .project
  15. .pydevproject
  16. color.py
  17. command.py
  18. completion.bash
  19. editor.py
  20. error.py
  21. event_log.py
  22. fetch.py
  23. git_command.py
  24. git_config.py
  25. git_refs.py
  26. git_ssh
  27. git_superproject.py
  28. git_trace2_event_log.py
  29. git_trace2_event_log_base.py
  30. hooks.py
  31. LICENSE
  32. main.py
  33. MANIFEST.in
  34. manifest_xml.py
  35. pager.py
  36. platform_utils.py
  37. platform_utils_win32.py
  38. progress.py
  39. project.py
  40. pyproject.toml
  41. README.md
  42. repo
  43. repo_logging.py
  44. repo_trace.py
  45. requirements.json
  46. run_tests
  47. run_tests.vpython3
  48. setup.py
  49. ssh.py
  50. SUBMITTING_PATCHES.md
  51. tox.ini
  52. wrapper.py
README.md

repo

Repo is a tool built on top of Git. Repo helps manage many Git repositories, does the uploads to revision control systems, and automates parts of the development workflow. Repo is not meant to replace Git, only to make it easier to work with Git. The repo command is an executable Python script that you can put anywhere in your path.

Contact

Please use the repo-discuss mailing list or issue tracker for questions.

You can file a new bug report under the “repo” component.

Please do not e-mail individual developers for support. They do not have the bandwidth for it, and often times questions have already been asked on repo-discuss or bugs posted to the issue tracker. So please search those sites first.

Install

Many distros include repo, so you might be able to install from there.

# Debian/Ubuntu.
$ sudo apt-get install repo

# Gentoo.
$ sudo emerge dev-vcs/repo

You can install it manually as well as it's a single script.

$ mkdir -p ~/.bin
$ PATH="${HOME}/.bin:${PATH}"
$ curl https://storage.googleapis.com/git-repo-downloads/repo > ~/.bin/repo
$ chmod a+rx ~/.bin/repo