$ git clone -n https://src.fedoraproject.org/rpms/openshadinglanguage.git /var/lib/mock/f41-build-852239-166292/root/chroot_tmpdir/scmroot/openshadinglanguage
Cloning into '/var/lib/mock/f41-build-852239-166292/root/chroot_tmpdir/scmroot/openshadinglanguage'...
$ git fetch origin 00d5528a739d7d760b69b6d1cedbd2b0471e423f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/openshadinglanguage
 * [new ref]         00d5528a739d7d760b69b6d1cedbd2b0471e423f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 00d5528 Update to 1.13.11.0 (rhbz#2309527)