Fix git revision in version command

[newhoggy]

Changelog

- description: |
    Fix git revision in `version` command
# uncomment types applicable to the change:
  type:
  # - feature        # introduces a new feature
  # - breaking       # the API has changed in a breaking way
  - compatible     # the API has changed but is non-breaking
  # - optimisation   # measurable performance improvements
  # - improvement    # QoL changes e.g. refactoring
  - bugfix         # fixes a defect
  # - test           # fixes/modifies tests
  # - maintenance    # not directly related to the code
  # - release        # related to a new release preparation
  # - documentation  # change in code docs, haddocks...

Context

Now that cardano-cli is in a separate repository from cardano-git-rev, it must invoke the Template Haskell function directly instead of via the gitRev function wrapper to get the correct git hash.

$ git log | head
commit faf0b83446351931f9de8357230c4b271a6e526b
Author: John Ky <john.ky@iohk.io>
Date:   Thu Sep 14 13:34:02 2023 +1000

    Fix git revision in version command

commit f02fe9c4494c1096b25ce72fc761730d702df3e1
Merge: 095fc4ae9 8bbf60211
Author: John Ky <newhoggy@gmail.com>
Date:   Thu Sep 14 02:29:20 2023 +0000
$ cabal exec -- cardano-cli version
cardano-cli 8.8.0.0 - linux-x86_64 - ghc-8.10
git rev f02fe9c4494c1096b25ce72fc761730d702df3e1

Checklist

• Commit sequence broadly makes sense and commits have useful messages
• The change log section in the PR description has been filled in
• New tests are added if needed and existing tests are updated. These may include:
  • golden tests
  • property tests
  • round trip tests
  • integration tests
    See Running tests for more details
• The version bounds in .cabal files are updated
• CI passes. See note on CI. The following CI checks are required:
  • Code is linted with hlint. See .github/workflows/check-hlint.yml to get the hlint version
  • Code is formatted with stylish-haskell. See .github/workflows/stylish-haskell.yml to get the stylish-haskell version
  • Code builds on Linux, MacOS and Windows for ghc-8.10.7 and ghc-9.2.7
• The changelog section in the PR is updated to describe the change
• Self-reviewed the diff