$ git clone -n https://src.fedoraproject.org/rpms/json_simple.git /var/lib/mock/f40-build-2139887-50849/root/chroot_tmpdir/scmroot/json_simple
Cloning into '/var/lib/mock/f40-build-2139887-50849/root/chroot_tmpdir/scmroot/json_simple'...
$ git fetch origin 14e3fc2f630f3207edbbcadd76a6c51fb00f5b07:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/json_simple
 * [new ref]         14e3fc2f630f3207edbbcadd76a6c51fb00f5b07 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 14e3fc2 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild