$ git clone -n https://src.fedoraproject.org/rpms/ettercap.git /var/lib/mock/f39-build-1496483-34549/root/chroot_tmpdir/scmroot/ettercap
Cloning into '/var/lib/mock/f39-build-1496483-34549/root/chroot_tmpdir/scmroot/ettercap'...
$ git fetch origin da8025faa487a906fd903a911e3d379c6cc41552:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ettercap
 * [new ref]         da8025faa487a906fd903a911e3d379c6cc41552 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at da8025f Fix FTBFS