Go to File -> Settings -> Tools -> Terminal and change Shell path based on the the installed git version.
for 64bit:
"C:\Program Files\Git\bin\sh.exe" --login -i
for 32bit:
"C:\Program Files (x86)\Git\bin\sh.exe" --login -i
Don't forget the quotes around the command.
using the path - /bin/bash - works well...
if you click in arrow, show some terminal options :)