$ git clone -n https://src.fedoraproject.org/rpms/octave-struct.git /var/lib/mock/f40-build-2153919-50916/root/chroot_tmpdir/scmroot/octave-struct
Cloning into '/var/lib/mock/f40-build-2153919-50916/root/chroot_tmpdir/scmroot/octave-struct'...
$ git fetch origin 14108f0ba39648777c1b7dce03d6a61a159ac2e5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/octave-struct
 * [new ref]         14108f0ba39648777c1b7dce03d6a61a159ac2e5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 14108f0 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild