fix: ensure rootDir and increase retry timeout

[j-zimnowoda]

This code change:

• ensures setting correct current working directory
• increases waitTillGitRepoAvailable timeout to accommodate DNS and Certificate request delays
• fixes the Retrying in undefined ms log message
• improve readability of error message once performing git ls-remote command

Testing methodology:

• I was able to reproduce the issue by deploying the following the APL-449-reproduce branch (fix: test #1884)
• I tested the change by deploying the APL-449-test branch, which exactly the same as this PR except I lowered down the retries parameter.

[ElderMatt]

Tested it by merging it in my own branch, and it works.

[CasLubbers]

Tested and worked ✅