CBG-4790: reconcile rev tree on write for ISGR #14940

Job	Run time
test-default-collection	4m 47s
python-lint	12s
test-race	6m 11s
lint	1m 50s
python-format	12s
build	1m 19s
test-sgcollect (windows-latest)	3m 17s
addlicense	13s
build cache perf tool	1m 14s
test-sgcollect (ubuntu-latest)	26s
test-sgcollect (macos-latest)	48s
test (windows)	5m 4s
test (macos)	4m 57s
test-stats-definition-exporter (macos-latest)	40s
test-stats-definition-exporter (windows-latest)	1m 5s
test-stats-definition-exporter (ubuntu-latest)	1m 22s
test (ubuntu)	5m 16s
	38m 53s

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