$ git clone -n https://src.fedoraproject.org/rpms/blender.git /var/lib/mock/f40-build-1488718-23846/root/chroot_tmpdir/scmroot/blender
Cloning into '/var/lib/mock/f40-build-1488718-23846/root/chroot_tmpdir/scmroot/blender'...
$ git fetch origin b9d2db85c42747c1b76a7eee8d499fde4e838bcb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/blender
 * [new ref]         b9d2db85c42747c1b76a7eee8d499fde4e838bcb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b9d2db8 Rebuild for OpenImageIO 2.5.12.0 (rhbz#2294166)