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fix(repo): unquote the filename line in `Repo.blame_incremental` #3108

Job	Run time
install/import (macos-latest, 3.10)	32s
install/import (ubuntu-24.04, 3.8)	20s
install/import (windows-latest, 3.9)	1m 3s
install/import (ubuntu-24.04, 3.9)	17s
install/import (windows-latest, 3.10)	1m 0s
install/import (windows-latest, 3.8)	1m 2s
install/import (macos-latest, 3.8)	1m 10s
install/import (macos-latest, 3.9)	35s
test (ubuntu, 3.12)	6m 41s
install/import (ubuntu-latest, 3.10)	10s
test (ubuntu, 3.13)	5m 46s
test (windows, 3.15t)	49m 14s
test (windows, 3.14t)	47m 57s
test (macos, 3.14)	13m 40s
test (windows, 3.15)	40m 26s
test (macos, 3.12)	13m 52s
test (windows, 3.11)	56m 25s
test (ubuntu, 3.15)	6m 44s
test (ubuntu, 3.12, gix)	5m 45s
test (ubuntu, 3.11)	5m 10s
test (macos, 3.12, gix)	9m 43s
test (windows, 3.14)	38m 54s
test (macos, 3.15)	15m 4s
test (macos, 3.13)	14m 41s
test (macos, 3.11)	14m 18s
test (windows, 3.12)	53m 21s
test (windows, 3.12, gix)	29m 18s
test (ubuntu, 3.15t)	7m 45s
test (ubuntu, 3.14)	4m 53s
test (windows, 3.13)	41m 8s
test (ubuntu, 3.14t)	8m 39s
	8h 15m 33s