$ git clone -n https://github.com/xcp-ng-rpms/ldns.git /var/lib/mock/v8.3-u-pcoval2-10382-28943/root/chroot_tmpdir/scmroot/ldns
Cloning into '/var/lib/mock/v8.3-u-pcoval2-10382-28943/root/chroot_tmpdir/scmroot/ldns'...
$ git fetch origin 36e5707a11c3f8141e4d42a7a5821fb7da4b43d6:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/ldns
 * [new ref]         36e5707a11c3f8141e4d42a7a5821fb7da4b43d6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 36e5707 bump release for test build