$ git clone -n https://src.fedoraproject.org/rpms/icecream.git /var/lib/mock/f40-build-790855-136879/root/chroot_tmpdir/scmroot/icecream
Cloning into '/var/lib/mock/f40-build-790855-136879/root/chroot_tmpdir/scmroot/icecream'...
$ git fetch origin 1daa2b5778461c9d7bb218418d7c111cdebc6667:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/icecream
 * [new ref]         1daa2b5778461c9d7bb218418d7c111cdebc6667 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1daa2b5 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild