Issue reported by sashiko-cli when start review for local repo

[selvarasu-g]

cargo run --bin sashiko-cli local -r
Finished dev profile [unoptimized + debuginfo] target(s) in 0.21s
9971617d8ec95fdccc8a18f71ae4b0f99fca7573 --force-local`
[1/4] Extracting patches from 9971617d8ec95fdccc8a18f71ae4b0f99fca7573... (1 commit)
[2/4] Starting review subprocess...
Local Review Results
Input: 9971617d8ec95fdccc8a18f71ae4b0f99fca7573
Baseline: 9971617d8ec95fdccc8a18f71ae4b0f99fca7573^

Error: Failed to resolve 9971617d8ec95fdccc8a18f71ae4b0f99fca7573^: fatal: ambiguous argument '9971617d8ec95fdccc8a18f71ae4b0f99fca7573^': unknown revision or path not in the working tree.