$ git clone -n https://github.com/xcp-ng-rpms/qemu.git /var/lib/mock/v8.3-incoming-9476-28212/root/chroot_tmpdir/scmroot/qemu
Cloning into '/var/lib/mock/v8.3-incoming-9476-28212/root/chroot_tmpdir/scmroot/qemu'...
$ git fetch origin 07fdd4fb651956ae9d9692cd06aa0c6717ff1631:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/qemu
 * [new ref]         07fdd4fb651956ae9d9692cd06aa0c6717ff1631 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 07fdd4f Merge pull request #8 from xcp-ng-rpms/dnt/fix-nvme-vwc