1. 查看文件夹位置

dotnet nuget locals all --list

2. 清空数据

# Clear the 3.x+ cache (use either command)
dotnet nuget locals http-cache --clear
nuget locals http-cache -clear

# Clear the 2.x cache (NuGet CLI 3.5 and earlier only)
nuget locals packages-cache -clear

# Clear the global packages folder (use either command)
dotnet nuget locals global-packages --clear
nuget locals global-packages -clear

# Clear the temporary cache (use either command)
dotnet nuget locals temp --clear
nuget locals temp -clear

# Clear the plugins cache (use either command)
dotnet nuget locals plugins-cache --clear
nuget locals plugins-cache -clear

# Clear all caches (use either command)
dotnet nuget locals all --clear
nuget locals all -clear

https://learn.microsoft.com/zh-cn/nuget/consume-packages/managing-the-global-packages-and-cache-folders#viewing-folder-locations