$ git clone -n https://src.fedoraproject.org/rpms/R-preprocessCore.git /var/lib/mock/f40-build-737793-107356/root/chroot_tmpdir/scmroot/R-preprocessCore
Cloning into '/var/lib/mock/f40-build-737793-107356/root/chroot_tmpdir/scmroot/R-preprocessCore'...
$ git fetch origin eacbfb333f441eac84890d5abfbb92da6a211584:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-preprocessCore
 * [new ref]         eacbfb333f441eac84890d5abfbb92da6a211584 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at eacbfb3 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild