How to maintain shallow clone of a set of branches in git

Question

I\'d like to maintain a shallow, mirrored, bare clone of several branches. I will clone locally from that for different project branches. e.g.

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Answer 1

I faced this question when searching for analogous sophisticated Git needs and perfectly understand that question is 2 years old. I'm answering because there are no answers at all whereas question is still very valid.

Shallowness is primarily fetch property. So it's possible to do fetch with --depth 200 and maintain history without too old commits.

Modern versions of Git have --shallow-exclude option. I think it's exactly what allows to "maintain everything since a certain commit".