fix: update pr-creator

[dhiller]

What this PR does / why we need it:

Changes:

• removes the fixed commit checkout from the test-infra to consume updates
• adds the hack scripts to the image

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #

Special notes for your reviewer:

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[victortoso]

Hi, I know it is a draft but I saw it when handling my notifications...

The only suggestion I'd give (not to your patch but still) is to use git clone with --depth 1 to reduce fetch & size if you are not interested in git's history.

[victortoso]

fwiw, git clone has --revision to pass a hash.

[dhiller]

just noted that this is a flag that has been added two minor versions ago from the latest - i.e. in an image i used it wasn't available yet.

[dhiller]

Hi, I know it is a draft but I saw it when handling my notifications...

The only suggestion I'd give (not to your patch but still) is to use git clone with --depth 1 to reduce fetch & size if you are not interested in git's history.

@victortoso makes total sense - I forget to do that every time. Thanks for the nudge!