Fixed branch names in clone commands #80

Job	Run time
ci / Generate job matrix	9s
ci / QA Checks (MkDocs Linting [8.1, latest], ubuntu-latest, laminas/laminas-continuous-integration-ac...	19s
ci / QA Checks (Documentation Linting [8.1, latest], ubuntu-latest, laminas/laminas-continuous-integra...	21s
ci / QA Checks (README Linting [8.1, latest], ubuntu-latest, laminas/laminas-continuous-integration-ac...	21s
	1m 10s

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