$ git clone -n https://src.fedoraproject.org/rpms/mailman3.git /var/lib/mock/f40-build-1723602-24647/root/chroot_tmpdir/scmroot/mailman3
Cloning into '/var/lib/mock/f40-build-1723602-24647/root/chroot_tmpdir/scmroot/mailman3'...
$ git fetch origin 1e63b0e7871a2259f21277faf6426fbe8aa797b7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mailman3
 * [new ref]         1e63b0e7871a2259f21277faf6426fbe8aa797b7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1e63b0e Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild