[CI] WP8.1 Build fails when trying to clone plugins

Logs:
=======
Link: UATDATA=C:\Windows\CCM\UATData\D9F8C395-CAB8-491d-B8AC-179A1FE1BE77
USERDOMAIN=DBSTARDESTROYER
USERDOMAIN_ROAMINGPROFILE=DBSTARDESTROYER
USERNAME=buildbot
USERPROFILE=C:\Users\buildbot
VS110COMNTOOLS=C:\Program Files (x86)\Microsoft Visual Studio 11.0\Common7\Tools\
VS120COMNTOOLS=C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\Tools\
WINDIR=C:\windows
using PTY: False
fatal: Could not parse object '536909e97f16872022cf88b8c32c0a87855a8005'.
program finished with exit code 128
elapsedTime=0.328000
------
UATDATA=C:\Windows\CCM\UATData\D9F8C395-CAB8-491d-B8AC-179A1FE1BE77
USERDOMAIN=DBSTARDESTROYER
USERDOMAIN_ROAMINGPROFILE=DBSTARDESTROYER
USERNAME=buildbot
USERPROFILE=C:\Users\buildbot
VS110COMNTOOLS=C:\Program Files (x86)\Microsoft Visual Studio 11.0\Common7\Tools\
VS120COMNTOOLS=C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\Tools\
WINDIR=C:\windows
using PTY: False
fatal: Could not parse object '536909e97f16872022cf88b8c32c0a87855a8005'.
program finished with exit code 128
elapsedTime=0.328000