$ git clone -n https://src.fedoraproject.org/rpms/R-cli.git /var/lib/mock/f40-build-2427070-60600/root/chroot_tmpdir/scmroot/R-cli
Cloning into '/var/lib/mock/f40-build-2427070-60600/root/chroot_tmpdir/scmroot/R-cli'...
$ git fetch origin 2f66114f79a541f94b8cfe9896a7394dcfc30fc8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-cli
 * [new ref]         2f66114f79a541f94b8cfe9896a7394dcfc30fc8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2f66114 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild