$ git clone -n https://src.fedoraproject.org/rpms/octave-struct.git /var/lib/mock/f41-build-side-1-2965706-35796/root/chroot_tmpdir/scmroot/octave-struct
Cloning into '/var/lib/mock/f41-build-side-1-2965706-35796/root/chroot_tmpdir/scmroot/octave-struct'...
$ git fetch origin 4f519941776f875e7ba399a07970de6707b1786e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/octave-struct
 * [new ref]         4f519941776f875e7ba399a07970de6707b1786e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4f51994 convert GPLv3+ license to SPDX