$ git clone -n https://src.fedoraproject.org/rpms/commit-stream.git /var/lib/mock/f40-build-2374986-60421/root/chroot_tmpdir/scmroot/commit-stream
Cloning into '/var/lib/mock/f40-build-2374986-60421/root/chroot_tmpdir/scmroot/commit-stream'...
$ git fetch origin f692cb0f6bdc10c282b305600346c402152b5076:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/commit-stream
 * [new ref]         f692cb0f6bdc10c282b305600346c402152b5076 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f692cb0 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild