$ git clone -n https://src.fedoraproject.org/rpms/python-fasjson-client.git /var/lib/mock/f39-build-1537637-36383/root/chroot_tmpdir/scmroot/python-fasjson-client
Cloning into '/var/lib/mock/f39-build-1537637-36383/root/chroot_tmpdir/scmroot/python-fasjson-client'...
$ git fetch origin c631fe13b28fcd8486112861262c05a2279692b9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-fasjson-client
 * [new ref]         c631fe13b28fcd8486112861262c05a2279692b9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c631fe1 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild