npm install complains about bad integrity chacksum

[rbarraud]

npm WARN tarball tarball data for local-echo@git+ssh://git@github.com/wavesoft/local-echo.git#8d0b7f55c5cf4b0b5f7c5132825dc5bd984bf017 (sha512-OezQtcbxsKKCJHF5j8zVjvLiOL14cksUP0cX/44fKjc7oTfTUSJ1ZH8zpLDeW4Hkj7Yn0gu/mCmBYU7Jn73Leg==) seems to be corrupted. Trying again.
npm WARN tar TAR_ENTRY_INFO stripping / from absolute path
npm WARN tar TAR_ENTRY_INFO stripping / from absolute path
npm ERR! code EINTEGRITY
npm ERR! sha512-OezQtcbxsKKCJHF5j8zVjvLiOL14cksUP0cX/44fKjc7oTfTUSJ1ZH8zpLDeW4Hkj7Yn0gu/mCmBYU7Jn73Leg== integrity checksum failed when using sha512: wanted sha512-OezQtcbxsKKCJHF5j8zVjvLiOL14cksUP0cX/44fKjc7oTfTUSJ1ZH8zpLDeW4Hkj7Yn0gu/mCmBYU7Jn73Leg== but got sha512-VRxCXk1ooS0kAH9LmGTOtY51Bu5Wfp2quj7/kimDpn+m9nE8KG1U0U96K0m/YC1Bg6y+YnFmJwFAszrlb2R0PA==. (40201 bytes)

Presumably this is saying that the npm registry integrity digest SHA512 doesn't match the actual integrity digest of the tarball itself.
I have no idea how this would have happened, sorry... all I know is that it
s stalling me from installing emception properly.

Thanks :-)
Roger Barraud
Wellington, New Zealand