$ git clone -n https://src.fedoraproject.org/rpms/plasma-wallpapers-dynamic.git /var/lib/mock/f42-build-862353-170742/root/chroot_tmpdir/scmroot/plasma-wallpapers-dynamic
Cloning into '/var/lib/mock/f42-build-862353-170742/root/chroot_tmpdir/scmroot/plasma-wallpapers-dynamic'...
$ git fetch origin d709b0d967aeb2705a7258cfaecb41524edc26cb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-wallpapers-dynamic
 * [new ref]         d709b0d967aeb2705a7258cfaecb41524edc26cb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d709b0d Rebuild (qt6)