$ git clone -n https://src.fedoraproject.org/rpms/wallpapoz.git /var/lib/mock/f45-build-38242-722/root/chroot_tmpdir/scmroot/wallpapoz
Cloning into '/var/lib/mock/f45-build-38242-722/root/chroot_tmpdir/scmroot/wallpapoz'...
$ git fetch origin fa158dc79eb8ae9d3a8dc249d9ffdeaf7b362df0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/wallpapoz
 * [new ref]         fa158dc79eb8ae9d3a8dc249d9ffdeaf7b362df0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fa158dc Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild