Change message to 'Copying from x to y'

Summary:
scap pull message 'Copying to xxx from yyy' sounds upside down to me, I
keep misleading the intent is to copy to xxx.

Flip it to have the source first and the destination last:
Copying from yyyy to xxxx

Reviewers: mmodell, Release-Engineering-Team, thcipriani

Reviewed By: Release-Engineering-Team, thcipriani

Subscribers: thcipriani, jenkins

Tags: Release-Engineering-Team

Differential Revision: https://phabricator.wikimedia.org/D1112