$ git clone -n https://github.com/xcp-ng-rpms/linux-firmware.git /var/lib/mock/v8.3-incoming-5751-10259/root/chroot_tmpdir/scmroot/linux-firmware
Cloning into '/var/lib/mock/v8.3-incoming-5751-10259/root/chroot_tmpdir/scmroot/linux-firmware'...
$ git reset --hard 9489a341ff0adbf93d710c2c75a5f03457c7a9aa
Downloading SOURCES/linux-firmware.tar.gz (358 MB)
HEAD is now at 9489a34 Add firmware for rtl8125