$ git clone -n https://src.fedoraproject.org/rpms/ctstream.git /var/lib/mock/f40-build-2433198-60691/root/chroot_tmpdir/scmroot/ctstream
Cloning into '/var/lib/mock/f40-build-2433198-60691/root/chroot_tmpdir/scmroot/ctstream'...
$ git fetch origin 3d80d1e0ec0a171c8b94d924f52997d5ce6decce:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ctstream
 * [new ref]         3d80d1e0ec0a171c8b94d924f52997d5ce6decce -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3d80d1e Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild