File build.patch of Package restic

Index: restic/build.go
===================================================================
--- restic.orig/build.go
+++ restic/build.go
@@ -132,6 +132,7 @@ func build(cwd string, env map[string]st
 		a = append(a, "-buildmode=pie")
 	}
 
+	a = append(a, "-mod=vendor")
 	a = append(a, args...)
 	cmd := exec.Command("go", a...)
 	cmd.Env = os.Environ()
@@ -386,7 +387,7 @@ func main() {
 
 	verbosePrintf("detected Go version %v\n", goVersion)
 
-	preserveSymbols := false
+	preserveSymbols := true
 	for i := range buildTags {
 		buildTags[i] = strings.TrimSpace(buildTags[i])
 		if buildTags[i] == "debug" || buildTags[i] == "profile" {