bash.exe: warning: could not find /tmp, please create!

After I cloned the repository to my portable drive, I have trouble pushed my files to Bitbucket. The error message I got:

$ git push -u origin master
bash.exe: warning: could not find /tmp, please create!
fatal: 'origin' does not appear to be a git repository
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.

Please help