## Issue Addressed
Currently the execution-engine-integration test uses latest master for nethermind and geth, and right now the test fails using the latest unreleased commits.
## Proposed Changes
Fix the nethermind and geth revisions the test uses to the latest tag in each repo. This way we are not continuously testing unreleased code, which might even get reverted, and reduce the failures only to releases in each one.
Also improve error handling of the commands used to manage the git repos.
## Additional Info
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Co-authored-by: Michael Sproul <micsproul@gmail.com>
