$ git clone -n https://src.fedoraproject.org/rpms/R-bit64.git /var/lib/mock/f41-build-820873-152372/root/chroot_tmpdir/scmroot/R-bit64
Cloning into '/var/lib/mock/f41-build-820873-152372/root/chroot_tmpdir/scmroot/R-bit64'...
$ git fetch origin f6c6494cdc5dfa8866610d729f0343e90aa6cec6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-bit64
 * [new ref]         f6c6494cdc5dfa8866610d729f0343e90aa6cec6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f6c6494 Rebuilt for https://fedoraproject.org/wiki/Fedora_41_Mass_Rebuild