$ git clone -n https://github.com/xcp-ng-rpms/blktap.git /var/lib/mock/v8.3-incoming-10132-28716/root/chroot_tmpdir/scmroot/blktap
Cloning into '/var/lib/mock/v8.3-incoming-10132-28716/root/chroot_tmpdir/scmroot/blktap'...
$ git fetch origin ad94a34072685ae2424c10f6da23129b362dfac8:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/blktap
 * [new ref]         ad94a34072685ae2424c10f6da23129b362dfac8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ad94a34 spec: Rebuild with openssl-3