I think, this should have been compiled and packaged as dtbo instead of dtb.

What is SYSFW_TISCI being used for AM62 ? Any existing macros can't be used ? Also is it changing indentation w.r.t previous line ?

My top level understanding was the security update was suggesting to avoid doing what we were doing already i.e. calling git from a sub-process through a recipe due to security concerns and so avoided

Due to recent security update in git, we are not able to fetch revision currently using existing method: https://github.blog/2022-04-12-git-security-vulnerability-announced/ So instead, use the SRCREV