$ git clone -n https://src.fedoraproject.org/rpms/vex.git /var/lib/mock/f40-build-2044651-48732/root/chroot_tmpdir/scmroot/vex
Cloning into '/var/lib/mock/f40-build-2044651-48732/root/chroot_tmpdir/scmroot/vex'...
$ git fetch origin 3096add89384cddd2c033d47ceac153bfc77455f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/vex
 * [new ref]         3096add89384cddd2c033d47ceac153bfc77455f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3096add Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild