component/pytorch: git command is required to build pytorch package.

component/pytorch/buildout.cfg

@@ -49,6 +49,7 @@ workdir = ${pytorch-repository:location}
 python-bin = ${buildout:bin-directory}/${pytorch-build-interpreter:interpreter}
 no-cuda = 0
 cmake-bin = ${cmake:location}/bin
+git-bin = ${git:location}/bin
 binutils-location = ${binutils:location}
 gcc-location = ${gcc:location}
 openblas-location = ${openblas:location}
@@ -61,6 +62,7 @@ script =
   openblas_location = self.options['openblas-location']
   env = {'PYTHONPATH':workdir,
          'PATH':':'.join([self.options['cmake-bin'],
+                          self.options['git-bin'],
                           binutils_location+'/bin',
                           gcc_location+'/bin',
                           os.environ['PATH']]),