ci: fix manual checkout #614

Job	Run time
find_package/linux/Release	4m 43s
find_package/linux/Debug	3m 24s
find_package/linux/libcxx/Release	5m 19s
find_package/linux/libcxx/Debug	3m 54s
find_package/macos/Release	7m 40s
find_package/macos/Debug	4m 41s
find_package/win/Release	5m 51s
find_package/win/Debug	5m 40s
find_library/linux/Release	5m 1s
find_library/linux/Debug	3m 10s
find_library/linux/libcxx/Release	6m 2s
find_library/linux/libcxx/Debug	4m 3s
find_library/macos/Release	5m 17s
find_library/macos/Debug	4m 21s
find_library/win/Release	5m 52s
find_library/win/Debug	4m 29s
singleheader/linux/Release	5m 9s
singleheader/linux/Debug	3m 8s
singleheader/linux/libcxx/Release	5m 17s
singleheader/linux/libcxx/Debug	4m 50s
singleheader/macos/Release	9m 40s
singleheader/macos/Debug	6m 26s
singleheader/win/Release	7m 2s
singleheader/win/Debug	4m 6s
	2h 5m 5s

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