checkout: fix bug that makes checkout follow symlinks in leading path
Upstream-Status: Acepted [684dd4c2b4]
CVE: CVE-2021-21300
(From OE-Core rev: 1b680f6aca14c92d03d32c4974292788140d7a65)
Signed-off-by: Minjae Kim <flowergom@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>