$ git clone -n https://src.fedoraproject.org/rpms/filesystem.git /var/lib/mock/f40-build-2348005-60132/root/chroot_tmpdir/scmroot/filesystem
Cloning into '/var/lib/mock/f40-build-2348005-60132/root/chroot_tmpdir/scmroot/filesystem'...
$ git fetch origin 63c7510dc11507381d017e5989abb138681c312b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/filesystem
 * [new ref]         63c7510dc11507381d017e5989abb138681c312b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 63c7510 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild