I have seen this on Windows, with msysgit 126.96.36.199. You have to fix the path to bin/curl-ca-bundle.crt. You have to mention the absolute path, using back-slashes like this:
git config --system http.sslcainfo "C:\Program Files (x86)\git\bin\curl-ca-bundle.crt"
or — not really recommended — you may choose to switch off SSL checks completely by executing the following command:
git config --system http.sslverify false
For both the cases, this will result in changes to [git-install-dir]/etc/gitconfig file, which may be edited directly, too.