diff --git a/src/cmd/go/internal/modload/init.go b/src/cmd/go/internal/modload/init.go
index ba88713b36e..12f52381b04 100644
--- a/src/cmd/go/internal/modload/init.go
+++ b/src/cmd/go/internal/modload/init.go
@@ -57,14 +57,14 @@ var (
 )
 
 // EnterModule resets MainModules and requirements to refer to just this one module.
-func EnterModule(ctx context.Context, enterModroot string) {
-	LoaderState.MainModules = nil // reset MainModules
-	LoaderState.requirements = nil
-	LoaderState.workFilePath = "" // Force module mode
+func EnterModule(loaderstate *State, ctx context.Context, enterModroot string) {
+	loaderstate.MainModules = nil // reset MainModules
+	loaderstate.requirements = nil
+	loaderstate.workFilePath = "" // Force module mode
 	modfetch.Reset()
 
-	LoaderState.modRoots = []string{enterModroot}
-	LoadModFile(LoaderState, ctx)
+	loaderstate.modRoots = []string{enterModroot}
+	LoadModFile(loaderstate, ctx)
 }
 
 // EnterWorkspace enters workspace mode from module mode, applying the updated requirements to the main
diff --git a/src/cmd/go/internal/workcmd/sync.go b/src/cmd/go/internal/workcmd/sync.go
index 7f45909de5c..233d12986da 100644
--- a/src/cmd/go/internal/workcmd/sync.go
+++ b/src/cmd/go/internal/workcmd/sync.go
@@ -104,7 +104,7 @@ func runSync(ctx context.Context, cmd *base.Command, args []string) {
 
 		// Use EnterModule to reset the global state in modload to be in
 		// single-module mode using the modroot of m.
-		modload.EnterModule(ctx, mms.ModRoot(m))
+		modload.EnterModule(modload.LoaderState, ctx, mms.ModRoot(m))
 
 		// Edit the build list in the same way that 'go get' would if we
 		// requested the relevant module versions explicitly.