Cherchez-vous `\DTMusedate{gitdate}` ?
\documentclass[12pt, a6paper, landscape]{scrartcl}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage[light, largesmallcaps]{kpfonts}
\usepackage{datetime2}
\usepackage{gitinfo2}
\usepackage[french]{babel}
\begin{filecontents*}{.git/gitHeadInfo.gin}
\usepackage[%
shash={9f16107},
lhash={9f161070652226a72301ed4a601ed4909a37ce32},
authname={Pathe},
authemail={abcde@fgh.ij},
authsdate={2020-02-06},
authidate={2020-02-06 06:57:12 +0100},
authudate={1580968632},
commname={Pathe},
commemail={abcde@fgh.ij},
commsdate={2020-02-06},
commidate={2020-02-06 06:57:12 +0100},
commudate={1580968632},
refnames={ (HEAD -> master)},
firsttagdescribe={0.97-1-g9f16107},
reltag={0.97-1-g9f16107}
]{gitexinfo}
\end{filecontents*}
\begin{document}
\DTMsetstyle{ddmmyyyy}
% ligne écrite par gitinfo2
version du \gitAuthorDate{}
version du \DTMusedate{gitdate}
\end{document}
![alt text][1]
[1]: https://texnique.fr/osqa/upfiles/Screen_Shot_2020-02-06_at_17.27.24.png
