Bug#956900: dh-make-golang: fails to download tarball when tag name missing prefix v

[Ben Fiedler]

Hi,

Seems like this is a bug in dh-make-golang:
https://github.com/Debian/dh-make-golang/blob/b1321ff661b2f397e9d266abba10447cdde35c83/make.go#L147

Filing it on GitHub is probably the best idea, as is contemplating a 
fix.

Best,
Ben