$ git clone -n https://src.fedoraproject.org/rpms/virt-top.git /var/lib/mock/f42-build-866036-173661/root/chroot_tmpdir/scmroot/virt-top
Cloning into '/var/lib/mock/f42-build-866036-173661/root/chroot_tmpdir/scmroot/virt-top'...
$ git fetch origin 7503fd9d5d8c24f9c659e98d73577b65c7ba31e4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/virt-top
 * [new ref]         7503fd9d5d8c24f9c659e98d73577b65c7ba31e4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7503fd9 OCaml 5.3.0 rebuild for Fedora 42