hooks: factor out an update-working-tree.sh script
authorAntonio Ospite <ao2@ao2.it>
Thu, 24 Jan 2019 14:54:48 +0000 (15:54 +0100)
committerAntonio Ospite <ao2@ao2.it>
Thu, 31 Jan 2019 08:34:40 +0000 (09:34 +0100)
In some cases the working tree needs to be updated outside of
populate-sparsely.sh (which is meant for a post-enter hook), so split
out this task from the main script.


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