I'm working in multiple go/golang project at same time all of them versioned on github. I'm using Visual Studio Code as IDE. For this, I've clone the projects on the same folder and I've opened it on Visual Studio Code. I have to do a modification, for example, in the project A that depends of the project B (both from the same organization), however this modification implies to modify project B too. Then from any go source file on project A I access to code on B but Visual Studio Code shows the code on A stored in go folder from home folder (i.e. /go/pkg/mod/github.com/organization/goproject/core/...). Is there any form to refer to the source code that I've cloned instead of the source code in go folder?
Clone your repositories TO the correct go/src/github.com/... path in your $GOPATH and change your imports to such. Point whatever VCS software you are using to these folders and maintain the repos inside your $GOPATH where they are supposed to be. Then there isn't two copies being maintained, just one. Your IDE will know exactly where to go because it's all in one place.
This is the way $GOPATH is supposed to work. In Go, you don't keep your project folder outside of the $GOPATH, you put it where it's supposed to go inside it. It's a different sort of project foldering system, but Go was designed this way, so it's best to just follow the paradigm even though it's a little confusing at first.