$ git clone -n https://src.fedoraproject.org/rpms/octave-jsonlab.git /var/lib/mock/f40-build-2726278-73122/root/chroot_tmpdir/scmroot/octave-jsonlab
Cloning into '/var/lib/mock/f40-build-2726278-73122/root/chroot_tmpdir/scmroot/octave-jsonlab'...
$ git fetch origin 9b6811c0ac09dbbb546ae422e822672b5320a7d8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/octave-jsonlab
 * [new ref]         9b6811c0ac09dbbb546ae422e822672b5320a7d8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9b6811c Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild