Comment # 1 on bug 1190182 from Michael Andres

> # grep 'providePackage\|main.cc' zypper.log-20210902_desktop_full
> 2021-09-01 21:11:03 <1> xigmatek(5390) [zypper] main.cc(main):132 ===== Hi, me zypper 1.14.48
> 2021-09-01 21:11:03 <1> xigmatek(5390) [zypper] main.cc(main):133 ===== 'zypper' 'dup' =====
> 2021-09-01 21:13:36 <1> xigmatek(5390) [zypp] PackageProvider.cc(providePackage):412 provide Package (2544)branding-openSUSE-84.87.20200106-4.7.noarch(download.opensuse.org-oss)
> 2021-09-01 21:13:37 <1> xigmatek(5390) [zypp] PackageProvider.cc(providePackage):513 provided Package (2544)branding-openSUSE-84.87.20200106-4.7.noarch(download.opensuse.org-oss) at /var/cache/zypp/packages/download.opensuse.org-oss/noarch/branding-openSUSE-84.87.202>
> ...
> 2021-09-01 21:17:41 <1> xigmatek(6131) [zypper] main.cc(main):132 ===== Hi, me zypper 1.14.48
> 2021-09-01 21:17:41 <1> xigmatek(6131) [zypper] main.cc(main):133 ===== 'zypper' 'dup' =====
> 2021-09-01 21:19:38 <1> xigmatek(6131) [zypp] PackageProvider.cc(providePackage):372 provided Package from cache (2544)branding-openSUSE-84.87.20200106-4.7.noarch(download.opensuse.org-oss) at /var/cache/zypp/packages/download.opensuse.org-oss/noarch/branding-openSUS>

Hi Bruno. If you check the logs (I listed just the 1st file), you find that the
1st (slow) command actually downloads the files and caches them below
/var/cache/zypp/packages/. The files stay there until they are consumed. The
2nd (fast) command finds the files in the cache and does not need to the
downloads.

If you want to enforce download of the packages, call 'zypper clean -a; zypper
ref' before your test (cleans packages and metadata; ref restores the metadata
again).