If you are a developer located around Beijing, or if your connection to Beijing is faster and more reliable than to locations outside of China, then you may benefit from the new git.kernel.org mirror kindly provided by Code Aurora Forum at https://kernel.source.codeaurora.cn/. This is a full mirror that is updated just as frequently as other git.kernel.org nodes (in fact, it is managed by the same team as the rest of kernel.org infrastructure, since CAF is part of Linux Foundation IT projects).
To start using the Beijing mirror, simply clone from that location or add a separate remote to your existing checkouts, e.g.:
git remote add beijing git://kernel.source.codeaurora.cn/pub/scm/.../linux.git git fetch beijing master