Enable Go build cache verification by setting GODEBUG=gocacheverify=1 to ensure rebuilds match cached outputs.
Set the GODEBUG environment variable to gocacheverify=1 to force the Go build cache to skip cache hits and verify that rebuilding produces identical results.
export GODEBUG=gocacheverify=1
go build ./...
This mode forces the cache to return a miss on every lookup, ensuring the compiler rebuilds the package and then checks if the output matches the cached version.
Go for C++ Developers: A Migration Guide uses this setting as a safety check for your build system. It forces Go to rebuild your code from scratch every time, even if it thinks it already has the result saved. If the new build doesn't match the old one, it alerts you that your build process might be inconsistent or non-deterministic.