Unable to git clone in pycharm terminal. Works outside of it

I am unable to git clone a project in the Pycharm terminal, but if I use a terminal outside of Pycharm it works fine. I've tried with the git protocol as well as https

C:\Plone5\src>git clone git@git.imsweb.com:plone/ims-publications
Cloning into 'ims-publications'...
error: cannot spawn ssh: No such file or directory
fatal: unable to fork

C:\Plone5\src>git clone https://git.imsweb.com/plone/ims-publications
Cloning into 'ims-publications'...
fatal: Unable to find remote helper for 'https'

Any ideas? I do have environment variables for http_proxy and https_proxy set to our corporate proxy if that matters. Git commands, at least some of them, appear to work in pycharm after cloning, and I use the interface for push/commits just fine.