$ git clone -n https://src.fedoraproject.org/rpms/syslog-ng.git /var/lib/mock/f40-build-2689916-68115/root/chroot_tmpdir/scmroot/syslog-ng
Cloning into '/var/lib/mock/f40-build-2689916-68115/root/chroot_tmpdir/scmroot/syslog-ng'...
$ git fetch origin e752074dc706595b928253ef9db44e062ae15814:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/syslog-ng
 * [new ref]         e752074dc706595b928253ef9db44e062ae15814 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e752074 fix 32bit problem with 4816.patch