deps: Now that from is in the lockfile, tighten git matching

Author: iarna

lib/install/deps.js

@@ -52,13 +52,9 @@ function doesChildVersionMatch (child, requested, requestor) {
   }
 
   if (requested.type === 'git' && child.fromShrinkwrap) {
-    const fromSw = child.fromShrinkwrap
-
-    if (fromSw.rawSpec === requested.rawSpec) return true
-
-    if (!fromSw.hosted || !requested.hosted) return false
-
-    return fromSw.hosted.toString() === requested.hosted.toString()
+    const fromSw = child.package._from ? npa(child.package._from) : child.fromShrinkwrap
+    fromSw.name = requested.name // we're only checking specifiers here
+    if (fromSw.toString() === requested.toString()) return true
   }
 
   if (!registryTypes[requested.type]) {