$ git clone -n https://src.fedoraproject.org/rpms/R-simmer.git /var/lib/mock/f38-build-side-42-init-devel-988842-29088/root/chroot_tmpdir/scmroot/R-simmer
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-988842-29088/root/chroot_tmpdir/scmroot/R-simmer'...
$ git fetch origin 2a799cd113be48accdaf97993d42a846512760bf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-simmer
 * [new ref]         2a799cd113be48accdaf97993d42a846512760bf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2a799cd Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild