cachelib -build fail

[kumaramit01]

We are unable to build cachelib on ubuntu/aarch64. I don't think it is related to the arch -but looks like something changed in the update-submodules.sh. It is looking for wangle revision while building folly where it is not present.

./contrib/build.sh -j -T
...
...
-- Up-to-date: /CacheLib/opt/cachelib/lib/pkgconfig/fmt.pc
'fmt' is now installed
awk: cannot open ./cachelib/external/fbthrift/build/deps/github_hashes/facebook/wangle-rev.txt (No such file or directory)
update-submodules.sh: error: failed to detect required wangle revision
build-package.sh: error: failed to update git-submodules
build.sh: error: failed to build dependency 'folly'

I am on
commit fc1711f4910ba56a00e6ed5e01dfd2792a6a5a04 (HEAD -> main, origin/main, origin/HEAD)

Any pointers would be useful.
Thanks