$ git clone -n https://src.fedoraproject.org/rpms/brltty.git /var/lib/mock/f39-build-1562628-37450/root/chroot_tmpdir/scmroot/brltty
Cloning into '/var/lib/mock/f39-build-1562628-37450/root/chroot_tmpdir/scmroot/brltty'...
$ git fetch origin ee571d6d4793c76970cd5930c3769c0f029dd38f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/brltty
 * [new ref]         ee571d6d4793c76970cd5930c3769c0f029dd38f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ee571d6 Fix the Cython 3 crash and build with Cython 3 again