$ git clone -n https://src.fedoraproject.org/rpms/python-cron-converter.git /var/lib/mock/f45-build-30146-643/root/chroot_tmpdir/scmroot/python-cron-converter
Cloning into '/var/lib/mock/f45-build-30146-643/root/chroot_tmpdir/scmroot/python-cron-converter'...
$ git fetch origin 0b6a6c65fd59b62ed3f30794c9bfd4f831ca38d1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-cron-converter
 * [new ref]         0b6a6c65fd59b62ed3f30794c9bfd4f831ca38d1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0b6a6c6 Update to 2.0.1 upstream release