$ git clone -n https://src.fedoraproject.org/rpms/virt-what.git /var/lib/mock/f40-build-798416-141894/root/chroot_tmpdir/scmroot/virt-what
Cloning into '/var/lib/mock/f40-build-798416-141894/root/chroot_tmpdir/scmroot/virt-what'...
$ git fetch origin c720a2a07a91a512f8d7efa372c7d8d33be713c2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/virt-what
 * [new ref]         c720a2a07a91a512f8d7efa372c7d8d33be713c2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c720a2a Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild