$ git clone -n https://src.fedoraproject.org/rpms/R-vcd.git /var/lib/mock/f40-build-2040934-48396/root/chroot_tmpdir/scmroot/R-vcd
Cloning into '/var/lib/mock/f40-build-2040934-48396/root/chroot_tmpdir/scmroot/R-vcd'...
$ git fetch origin e77854bfc0f2330e4ac8e7ebcdd9f38d5db419d6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-vcd
 * [new ref]         e77854bfc0f2330e4ac8e7ebcdd9f38d5db419d6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e77854b Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild