Merge branch 'jk/use-quick-lookup-in-clone-for-tag-following'

The logic to auto-follow tags by "git clone --single-branch" was
not careful to avoid lazy-fetching unnecessary tags, which has been
corrected.

* jk/use-quick-lookup-in-clone-for-tag-following:
  clone: use "quick" lookup while following tags

diff --cc builtin/clone.c
Simple merge

diff --cc t/t5616-partial-clone.sh
Simple merge