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fix: preserve legacy path bytes and repair tag, tree and ref edge cases #3093

Job	Run time
install/import (ubuntu-latest, 3.8)	18s
install/import (ubuntu-latest, 3.10)	10s
install/import (windows-latest, 3.10)	1m 1s
install/import (windows-latest, 3.8)	1m 5s
test (macos, 3.13)	10m 19s
install/import (ubuntu-latest, 3.9)	19s
install/import (macos-latest, 3.8)	1m 4s
install/import (macos-latest, 3.10)	34s
install/import (macos-latest, 3.9)	27s
install/import (windows-latest, 3.9)	1m 2s
test (ubuntu, 3.15t)	4m 48s
test (ubuntu, 3.12)	5m 42s
test (ubuntu, 3.13)	1m 30s
test (ubuntu, 3.14t)	4m 0s
test (macos, 3.12)	9m 9s
test (ubuntu, 3.15)	3m 18s
test (ubuntu, 3.11)	3m 41s
test (windows, 3.15)	9m 17s
test (windows, 3.11)	10m 13s
test (macos, 3.11)	4m 43s
test (windows, 3.15t)	7m 34s
test (windows, 3.14t)	3m 15s
test (ubuntu, 3.12, gix)	2m 51s
test (windows, 3.14)	1m 23s
test (macos, 3.14)	3m 8s
test (macos, 3.12, gix)	5m 8s
test (macos, 3.15)	10m 57s
test (ubuntu, 3.14)	10m 57s
test (windows, 3.13)	10m 57s
test (windows, 3.12, gix)	3m 15s
test (windows, 3.12)	10m 57s
	2h 23m 2s