$ git clone -n https://src.fedoraproject.org/rpms/R-msm.git /var/lib/mock/f40-build-2321808-58610/root/chroot_tmpdir/scmroot/R-msm
Cloning into '/var/lib/mock/f40-build-2321808-58610/root/chroot_tmpdir/scmroot/R-msm'...
$ git fetch origin 34811aa822e02fc0b972b4444c9984ca1e7a1d60:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-msm
 * [new ref]         34811aa822e02fc0b972b4444c9984ca1e7a1d60 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 34811aa Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild