$ git clone -n https://src.fedoraproject.org/rpms/buildbox.git /var/lib/mock/f41-build-845877-162830/root/chroot_tmpdir/scmroot/buildbox
Cloning into '/var/lib/mock/f41-build-845877-162830/root/chroot_tmpdir/scmroot/buildbox'...
$ git fetch origin b6a6cf9f2f2eff7021468ad057224ebf7b36f9c1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/buildbox
 * [new ref]         b6a6cf9f2f2eff7021468ad057224ebf7b36f9c1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b6a6cf9 Rebuilt for abseil-cpp-20240722.0