* Reject `dgit pull' in split view quilt modes, to avoid
creating unfortunate wreckage on non-dgit-view branches.
Closes:#842608.
+ * Cope when cloning suite which doesn't receive uploads,
+ like testing. Closes:#842621.
+ * Properly fetch all archive dgit view tags, as we intended.
+ * Actually provide a -p (--package=) option (!)
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