Yea but note the repository you posted doesn't change the hash of each post when you download. Be careful not to repost those directly.
+1 for Vurku
No, it's a code attached to the image and even if you change the name, the IG will know that it's the same picture used in another account which will trigger "infringement etc etc etc" Vurku does change the hash automatically and I think there's another tool around this forum for changing hash manager but you need to search it yourself.
Nope. Each image has a unique hash. A hash is something Instagram checks to see if your post has already been posted. So Instagram can easily just check if your uploaded image or video has already been uploaded by saying, "does this image hash match any other image hash in our system?". Changing the hash makes it very difficult for Instagram to detect that you're reposting. This is something Instagram has been enforcing and penalizing more recently so it's even more important now to change the hash of each post you reupload than it has been in the past.
Not sure what you mean. Anyway the point is that output file is similar to vurku output