I lost my .keystore file?

Question

Ok folks.. long story short, I was developing on a computer that I no longer have access to. I was able to retrieve the source code, but not the .keystore file used to sign

Answer 1

There must be a way around this.. what about a hard drive fail?

I would like to add that always keep a backup of the keystore in cloud storage like Google Drive, Dropbox or email it to yourself.