$ git clone -n https://src.fedoraproject.org/forks/mkoncek/rpms/transfig.git /var/lib/mock/f41-build-61043188-6588102/root/chroot_tmpdir/scmroot/transfig
Cloning into '/var/lib/mock/f41-build-61043188-6588102/root/chroot_tmpdir/scmroot/transfig'...
$ git fetch origin 89c86f50a32b14a41303b87a5ae806bd15165281:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/forks/mkoncek/rpms/transfig
 * [new ref]         89c86f50a32b14a41303b87a5ae806bd15165281 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 89c86f5 Add smoke tests