$ git clone -n https://src.fedoraproject.org/rpms/blender.git /var/lib/mock/f41-build-side-1-2999800-36291/root/chroot_tmpdir/scmroot/blender
Cloning into '/var/lib/mock/f41-build-side-1-2999800-36291/root/chroot_tmpdir/scmroot/blender'...
$ git fetch origin 7d00e6e1231da807f7e36283cca26dc3e924dd9d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/blender
 * [new ref]         7d00e6e1231da807f7e36283cca26dc3e924dd9d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7d00e6e Fix distribution of compressed macro