Bug#811565: [uscan] git mode: allow for scanning repositories without tags

[Osamu Aoki]

Hi,

On Sun, Jan 14, 2018 at 08:25:05PM +0100, Michael Stapelberg wrote:
> Thanks for your work on this!
> 
> I gave the attached patch a shot, and it seems to work fine for me. I tried it
> on two packages:
> 
> “upspin” (untagged git, non-GitHub host, Files-Excluded in debian/copyright):
> 
> # uscan(1) configuration file.
> version=4
> opts="mode=git,pgpmode=none" \
> https://upspin.googlesource.com/upspin \
> HEAD debian uupdate
> 
> “golang-github-coreos-go-oidc” (typical Go package on GitHub):
> 
> # uscan(1) configuration file.
> version=4
> opts="mode=git,pgpmode=none" \
> https://github.com/coreos/go-oidc.git \
> HEAD debian uupdate
> 
> So, from my end, this looks good. I hope these examples can serve as test
> cases?
> 
> Let me know if you need anything else.

I cleaned-up/rewrote code and made serious debugs ..

But I still see several rough edges.

Also I need to ensure remote branch head tracking and <tag>-3-g1f526bd
like autogenerated tag from git describe o work.

Then I can set up clean syntax for git.

Give me more time.

Osamu