$ git clone -n https://src.fedoraproject.org/rpms/gkrellm-top.git /var/lib/mock/f40-build-792560-138446/root/chroot_tmpdir/scmroot/gkrellm-top
Cloning into '/var/lib/mock/f40-build-792560-138446/root/chroot_tmpdir/scmroot/gkrellm-top'...
$ git fetch origin fb19d633562ac4299ec16b022634d30d313a9610:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gkrellm-top
 * [new ref]         fb19d633562ac4299ec16b022634d30d313a9610 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fb19d63 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild