Put git restart guard in a debounce #11211

Job	Run time
lint_ruby	21s
lint_node	40s
build_node (ubuntu-latest)	1m 31s
build_node (macos-latest)	1m 56s
spelling	16s
build_node (windows-latest)	7m 11s
Ruby 3.1 on ubuntu-latest	15m 23s
Verify Jekyll website builds	7s
Ruby 3.2 on ubuntu-latest	14m 39s
Ruby 3.3 on ubuntu-latest	14m 28s
Ruby 3.1 on macos-latest	11m 35s
Ruby 3.2 on macos-latest	10m 49s
Ruby 3.3 on macos-latest	8m 54s
Ruby 3.1 on windows-latest	21m 0s
Ruby 3.2 on windows-latest	20m 26s
Ruby 3.3 on windows-latest	23m 12s
	2h 32m 28s

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