How to update google webrtc source from upstream.

[cloudwebrtc]

Clone or fork the repo and switch to master

git clone https://github.com/webrtc-sdk/webrtc.git -b master webrtc-src
cd webrtc-src

Add upstream

git remote add upstream https://chromium.googlesource.com/external/webrtc.git
git fetch upstream

Edit the upstream .git/config to download branch-heads/* from googl webrtc.

• add fetch = +refs/branch-heads/*:refs/remotes/upstream/branch-heads/* to .git/config

[remote "upstream"]
        url = https://chromium.googlesource.com/external/webrtc
        fetch = +refs/heads/*:refs/remotes/upstream/*
        fetch = +refs/branch-heads/*:refs/remotes/upstream/branch-heads/*

• Pull all branches from upstream.

git fetch upstream
git branch -a

• You can see that all branches look like this.

...
remotes/upstream/branch-heads/4006
remotes/upstream/branch-heads/4007
...

You can see the all branches in https://chromiumdash.appspot.com/branches.

for example:
Sync the m92 version to our repo.

M92 = refs/branch-heads/4515

git checkout -b branch-m92 remotes/upstream/branch-heads/4515
git push --set-upstream origin branch-m92

Now that you have an m version branch, you can add your own patches and compile them.

Cheers.