Change git password with Visual Studio

We have to update our Windows 10 password every 3 months.  I just recently did, so now GIT SYNC does not work with Visual Studio 12.  I wanted to change my git password, but see the attached image.  There is no way to enter a password.  And yeah, this is sort of a VS rather than TC question, but I am using VS for TC code so someone must have experience ;-)