I also added a Makefile for mine (LaTeX), and it would add the commit hash to the front page (with an asterisk if the repository had uncommitted changes).
So, if I gave a draft to someone and got feedback, I’d know exactly which revision it was.
Makefile in other comments. You’ll need something like this on the title page (this assumes you use my Makefile which puts the version in VERSION.tex [that’s the literal name of the file, not a placeholder]):
{\bf{\color{red}DOCUMENT REVISION:}} {\color{blue}\input{VERSION}}
fossilesque
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flango