GitCode, a git-hosting website operated Chongqing Open-Source Co-Creation Technology Co Ltd and with technical support from CSDN and Huawei Cloud.
It is being reported that many users’ repository are being cloned and re-hosted on GitCode without explicit authorization.
There is also a thread on Ycombinator (archived link)
The only issue I see is that they make a new Chinese equivalent for GitHub where they can censor code easier (or was GitHub already blocked?), but they already censor everything anyway so there’s probably effectively no change.