$ git clone -n https://src.fedoraproject.org/rpms/kiwi-boxed-plugin.git /var/lib/mock/f39-build-2242414-53685/root/chroot_tmpdir/scmroot/kiwi-boxed-plugin
Cloning into '/var/lib/mock/f39-build-2242414-53685/root/chroot_tmpdir/scmroot/kiwi-boxed-plugin'...
$ git fetch origin b94bf4ce1d53894d140c778201f4c38d9f717e0c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kiwi-boxed-plugin
 * [new ref]         b94bf4ce1d53894d140c778201f4c38d9f717e0c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b94bf4c Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild