$ git clone -n https://src.fedoraproject.org/rpms/R-corpus.git /var/lib/mock/f40-build-1514341-23911/root/chroot_tmpdir/scmroot/R-corpus
Cloning into '/var/lib/mock/f40-build-1514341-23911/root/chroot_tmpdir/scmroot/R-corpus'...
$ git fetch origin 5d713d9d6a50f930db813220a039adbcfd01b7d3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-corpus
 * [new ref]         5d713d9d6a50f930db813220a039adbcfd01b7d3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5d713d9 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild