$ git clone -n https://src.fedoraproject.org/rpms/proxytunnel.git /var/lib/mock/f40-build-2632874-65903/root/chroot_tmpdir/scmroot/proxytunnel
Cloning into '/var/lib/mock/f40-build-2632874-65903/root/chroot_tmpdir/scmroot/proxytunnel'...
$ git fetch origin 31dcafe14be66af68537e99736aec02d2dc823a0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/proxytunnel
 * [new ref]         31dcafe14be66af68537e99736aec02d2dc823a0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 31dcafe Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild