Reporting the exact version of a template used

[oesteban]

As commented by @yarikoptic in nipreps/fmriprep#1802 (comment), it would be great to implement in the client some utility to keep track of the exact template used in an analysis.

I guess that the actual git commit of the templateflow/templateflow repo should suffice? WDYT?

[yarikoptic]

if you do not expect all files to change with every commit, and do not want to refetch all of them upon each upgrade -- might be overkill. But if that is ok, then might be better to may be use git describe (well, git describe --tags since I guess releases are done via github and release tags aren't annotated) version for a given commit? then it would be a clear version for releases and then smth like 1.2.1-4-g350b8b9 if somehow current development version was used? then besides the commit hexsha (350b8b9) you would get the release as well

[oesteban]

This is readily doable on DataLad distributions, but would be trivial for S3 (download) distributions with templateflow/templateflow#91.