$ go env
GO111MODULE=""
GOARCH="amd64"
GOBIN=""
GOCACHE="/Users/lab44/Library/Caches/go-build"
GOENV="/Users/lab44/Library/Application Support/go/env"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GOINSECURE=""
GOMODCACHE="/Users/lab44/go/pkg/mod"
GOOS="darwin"
GOPATH="/Users/lab44/go"
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/usr/local/Cellar/go/1.15.6/libexec"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/usr/local/Cellar/go/1.15.6/libexec/pkg/tool/darwin_amd64"
GCCGO="gccgo"
AR="ar"
CC="clang"
CXX="clang++"
CGO_ENABLED="1"
GOMOD=""
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/15/_y19tt655g11nh3h3b25qj100000gp/T/go-build109875245=/tmp/go-build -gno-record-gcc-switches -fno-common"

package main
import (

"encoding/json"

"fmt"

"log"

"reflect"
"github.com/fatih/structs"

)
func main() {

type requestBody struct {

Title       *string

Description *string

ProductType *string

Brand       *string

}
content := []byte(`{"description": "Hello-World"}`)
var result requestBody

err := json.Unmarshal(content, &result)
if err != nil {
	log.Fatal(err)
}

fields := structs.Map(result)
updateFields := make(map[string]interface{})
for name, value := range fields {
	if value != nil {
		// no nil values should be printed here
		// Because we already checked nil values in line 31.
		// But why it's printing the value?
		//
		//
		// ORIGINAL OUTPUT:
		// Title - (*string)(nil)
		// Description - (*string)(0xc00010a140)
		// ProductType - (*string)(nil)
		// Brand - (*string)(nil)
		//
		// OUTPUT I WANT:
		// Description - (*string)(0xc00010a140)
		//
		fmt.Printf("%v - %#v\n", name, value)
		updateFields[name] = reflect.Indirect(reflect.ValueOf(value))
	}
}

}