$ git clone -n https://src.fedoraproject.org/rpms/ddclient.git /var/lib/mock/f39-build-1551247-36967/root/chroot_tmpdir/scmroot/ddclient
Cloning into '/var/lib/mock/f39-build-1551247-36967/root/chroot_tmpdir/scmroot/ddclient'...
$ git fetch origin 77b9e7cded9c9122c79bc50008e07713450105f0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ddclient
 * [new ref]         77b9e7cded9c9122c79bc50008e07713450105f0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 77b9e7c Enable tests