Adding option for explicit block for get checkpoint

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 81.32%. Comparing base (638d481) to head (10b9a26).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1503 +/- ## ========================================== + Coverage 80.89% 81.32% +0.43% ========================================== Files 97 97 Lines 6803 6806 +3 ========================================== + Hits 5503 5535 +32 + Misses 1300 1271 -29 ``` | [Flag](https://app.codecov.io/gh/delvtech/agent0/pull/1503/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=delvtech) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/delvtech/agent0/pull/1503/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=delvtech) | `81.32% <100.00%> (+0.43%)` | :arrow_up: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=delvtech#carryforward-flags-in-the-pull-request-comment) to find out more.

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