From: Albert Cui <albertqcui@gmail.com>

Git appears to hang when downloading packfiles as this part of the
fetch is silent, causing user confusion. This change implements
progress for the number of packfiles downloaded; a progress display
for bytes would involve deeper changes at the http-fetch layer
instead of fetch-pack, the caller.

Signed-off-by: Albert Cui <albertqcui@gmail.com>

Submitted-As: https://lore.kernel.org/git/pull.907.git.1616007794513.gitgitgadget@gmail.com