Add support for get-app with revision for Debian forky

[danielphan2003]

Is your feature request related to a problem? Please describe. Git 2.49, released in 2025-03-14 added support for this with the “--revision” in the clone command.

https://git-scm.com/docs/git-clone#Documentation/git-clone.txt-code--revisionltrevgtcode

Describe the solution you'd like Add support for get-app with revision when Debian forky is released.

Describe alternatives you've considered Release an image based on Debian forky image for now.

Additional context Current releases of Git in Debian.