Starting June 22nd, OONI data from #China shows the blocking of F-Droid (@fdroidorg) by means of DNS injection, where an unrelated IP address (e.g., DropBox) is returned to the client.
This technique is commonly used in China to restrict access to services.
https://explorer.ooni.org/m/20230622211826.539282_CN_webconnectivity_87bc828c0c6e5758
OONI data showing the block of F-Droid on at least 4 networks can be found here: