`envoy.base.utils`(0.5.8): Fix project commit escape #4744

Job	Run time
gh-actions (20.x, appauth)	27s
gh-actions (20.x, dispatch)	25s
gh-actions (20.x, github/checks)	21s
gh-actions (20.x, github/mutex)	24s
gh-actions (20.x, github/script/run)	18s
gh-actions (20.x, hashfiles)	20s
gh-actions (20.x, jq)	20s
gh-actions (20.x, retest)	28s
gh-actions (20.x, torun)	18s
	3m 21s

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