git show "previous tag"

[Andrew Edwards via Digitalmars-d]

Anyone here knows how to consistently obtain the previous tag on git? 
Currently, the installer uses:

	git describe --abbrev=0 v2.067.0-b1^

This does not always retrieve the correct tag though. In this case the 
tag prior to v2.067.0-b1 is v2.066.0, however this command returns 
v2.066.0-b1. This causes a problem because v2.066.0-b1 broke the 
installer and cannot be used to build DMD. To get around this issue, I 
usually upload a different version of the compiler in place of 
v2.066.0-b1. This is not the ideal solution because anyone downloading 
that v2.066.0-b1.zip will not be getting something completely different.

Assistance appreciated.

Regards,
Andrew