$ git clone -n https://src.fedoraproject.org/rpms/octave-brain2mesh.git /var/lib/mock/f41-build-side-1-2969492-35819/root/chroot_tmpdir/scmroot/octave-brain2mesh
Cloning into '/var/lib/mock/f41-build-side-1-2969492-35819/root/chroot_tmpdir/scmroot/octave-brain2mesh'...
$ git fetch origin 4d79f5947f1647715eb9fe865c4b9eee0203b0bc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/octave-brain2mesh
 * [new ref]         4d79f5947f1647715eb9fe865c4b9eee0203b0bc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4d79f59 convert GPLv2+ license to SPDX