As the CommandProcessor is putting sinqle quotes around the argument that has double quotes (--pretty=fomat:"%H") to "git log", executed by GitRepository::getLastCommitId, the commit ID is then output with surrounding double quotes

This causes CommitId to throw "Invalid commit ID"

CommandProcessor generates this command,
git log '--pretty=format:"%H"' -n 1
which when executed returns
"8d14d508186179480bc35a5c0ab6d9a0f6db863b"

Had it instead been
git log --pretty=format:"%H" -n 1
or
git log '--pretty=format:%H' -n 1
it would work:
8d14d508186179480bc35a5c0ab6d9a0f6db863b