We're hiring!
*

Quick hack: git reset upstream

Robert Foss avatar

Robert Foss
August 27, 2018

Share this post:

Working with a git based project that has a defacto upstream repository means that you perioducally want to fetch the canonical master branch. This can be simplified with a .gitconfig alias.

robertfoss@xps9570 ~/work/libdrm $ git ru
remote: Counting objects: 234, done.
remote: Compressing objects: 100% (233/233), done.
remote: Total 234 (delta 177), reused 0 (delta 0)
Receiving objects: 100% (234/234), 53.20 KiB | 939.00 KiB/s, done.
Resolving deltas: 100% (177/177), completed with 36 local objects.
From git://anongit.freedesktop.org/mesa/drm
   cb592ac8166e..bcb9d976cd91  master     -> upstream/master
 * [new tag]                   libdrm-2.4.93 -> libdrm-2.4.93
 * [new tag]                   libdrm-2.4.94 -> libdrm-2.4.94

The idea here is that we by issuing a single short command can fetch the latest master branch from the upstream repository of the codebase we're working on and set our local master branch to point to the most recent upstream/master one.

This works by looking for a remote called upstream (or falling back to origin if it isn't found). And resetting the local master branch to point at the upstream/master branch.

~/.gitconfig

Add this snippet under the [alias] section of your ~/.gitconfig file.

[alias]
    ru = "!f() { \
        REMOTES=$(git remote); \
        REMOTE=\"origin\"; \
        case \"$REMOTES\" in \
            *upstream*) \
                REMOTE=\"upstream\"; \
                ;; \
           esac; \
        git fetch $REMOTE; \
        git update-ref refs/heads/master refs/remotes/$REMOTE/master; \
        git checkout master >/dev/null 2>&1; \
        git reset --hard $REMOTE/master >/dev/null 2>&1; \
        git checkout - >/dev/null 2>&1; \
    }; f

If you have a closer look, you'll notice that the upstream remote is used if has been added, otherwise the origin remote is used. This selection is done using git running a shell script.

Example

This is what git ru might look like when used.

robertfoss@xps9570 ~/work/libdrm $ git remote -v
origin  git@gitlab.collabora.com:robertfoss/libdrm.git (fetch)
origin  git@gitlab.collabora.com:robertfoss/libdrm.git (push)
upstream    git://anongit.freedesktop.org/mesa/drm (fetch)
upstream    git://anongit.freedesktop.org/mesa/drm (push)

robertfoss@xps9570 ~/work/libdrm $ git log --pretty=log --abbrev-commit
cb592ac8166e - (HEAD -> master, upstream/master, tag: libdrm-2.4.92) bump version for release (4 months ago) 
c5a656818492 - freedreno: add fd_pipe refcounting (4 months ago) 
1ac3ecde2f2c - intel: add support for ICL 11 (4 months ago) 
bc9c789073c8 - amdgpu: Deinitialize vamgr_high{,_32} (4 months ago) 
[snip]

robertfoss@xps9570 ~/work/libdrm $ git ru
remote: Counting objects: 234, done.
remote: Compressing objects: 100% (233/233), done.
remote: Total 234 (delta 177), reused 0 (delta 0)
Receiving objects: 100% (234/234), 53.20 KiB | 939.00 KiB/s, done.
Resolving deltas: 100% (177/177), completed with 36 local objects.
From git://anongit.freedesktop.org/mesa/drm
   cb592ac8166e..bcb9d976cd91  master     -> upstream/master
 * [new tag]                   libdrm-2.4.93 -> libdrm-2.4.93
 * [new tag]                   libdrm-2.4.94 -> libdrm-2.4.94

robertfoss@xps9570 ~/work/libdrm $ git log --pretty=log --abbrev-commit
cb9d976cd91 - (HEAD -> master, upstream/master) xf86drm: fallback to normal path when realpath fails (4 hours ago) 
8389c5454804 - (tag: libdrm-2.4.94) Bump to version 2.4.94 (19 hours ago) 
f0c642e8df41 - libdrm: add msm drm uapi header (25 hours ago) 
[snip]

Thanks

This post has been a part of work undertaken by my employer Collabora.


Visit Robert's blog.


Add a Comment






Allowed tags: <b><i><br>Add a new comment:


Search the newsroom

Latest Blog Posts

Adding HEVC/H.265 support for NXP's i.MX 8M

17/02/2021

Our recent efforts on the Hantro kernel driver have resulted in the addition of H.264 decoding support and multiple performance improvements.…

Network adaptive streaming with Hwangsaeul

08/02/2021

Hwangsaeul, or H8L, a remote surveillance streaming solution, utilizes the capability of libsrt to collect statistics from open SRT sockets…

Trimming apitrace workload captures for better Mesa testing

01/02/2021

Complex, real-world correctness tests and performance analysis are now possible thanks to gltrim, a new tool recently added to apitrace,…

GStreamer on Windows: adding WebRTC support to a gst-build install

28/01/2021

Earlier this week, WebRTC became an official W3C and IETF standard. GStreamer has a powerful and rapidly maturing WebRTC implementation.…

Implementing a performance boosting algorithm in Coccinelle

21/01/2021

Last year, from June to September, I worked on the kernel development tool Coccinelle under Collabora. I implemented a performance boosting…

Desktop OpenGL 3.1 on Mali GPUs with Panfrost

13/01/2021

The open source Panfrost driver for Arm Mali Midgard and Bifrost GPUs now provides non-conformant OpenGL ES 3.0 on Bifrost and desktop OpenGL…

Open Since 2005 logo

We use cookies on this website to ensure that you get the best experience. By continuing to use this website you are consenting to the use of these cookies. To find out more please follow this link.

Collabora Ltd © 2005-2021. All rights reserved. Privacy Notice. Sitemap.