$ git clone -n https://src.fedoraproject.org/rpms/R-unitizer.git /var/lib/mock/f40-build-2679354-67930/root/chroot_tmpdir/scmroot/R-unitizer
Cloning into '/var/lib/mock/f40-build-2679354-67930/root/chroot_tmpdir/scmroot/R-unitizer'...
$ git fetch origin e2a1c920c790dedd47eb99c6b7ad4c16bfe308e1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-unitizer
 * [new ref]         e2a1c920c790dedd47eb99c6b7ad4c16bfe308e1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e2a1c92 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild