$ git clone -n https://github.com/xcp-ng-rpms/qemu.git /var/lib/mock/v8.3-incoming-9945-28628/root/chroot_tmpdir/scmroot/qemu
Cloning into '/var/lib/mock/v8.3-incoming-9945-28628/root/chroot_tmpdir/scmroot/qemu'...
$ git fetch origin 5de1f9d5e22a46c316033296f0de95098179e1f4:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/qemu
 * [new ref]         5de1f9d5e22a46c316033296f0de95098179e1f4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5de1f9d Backport fix for CVE-2023-0330