$ git clone -n https://src.fedoraproject.org/rpms/json.git /var/lib/mock/f40-build-798645-141994/root/chroot_tmpdir/scmroot/json
Cloning into '/var/lib/mock/f40-build-798645-141994/root/chroot_tmpdir/scmroot/json'...
$ git fetch origin d590796bb79609910453ec2c2db4cbd81c977bed:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/json
 * [new ref]         d590796bb79609910453ec2c2db4cbd81c977bed -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d590796 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild