dim: update manifest before updating branches
We need to update the manifest before trying to update the branches. This fixes the case in which a branch is added/removed from the manifest, that would otherwise cause:
Successfully rebased and updated refs/heads/topic/core-for-CI.
Already on 'topic/nouveau-i915-dp-helpers-and-cleanup'
Your branch is based on 'drm-misc/topic/nouveau-i915-dp-helpers-and-cleanup', but the upstream is gone.
(use "git branch --unset-upstream" to fixup)
merge: drm-misc/topic/nouveau-i915-dp-helpers-and-cleanup - not something we can merge
Signed-off-by: Lucas De Marchi lucas.demarchi@intel.com