$ git clone -n https://src.fedoraproject.org/rpms/R-RMariaDB.git /var/lib/mock/f40-build-789584-135922/root/chroot_tmpdir/scmroot/R-RMariaDB
Cloning into '/var/lib/mock/f40-build-789584-135922/root/chroot_tmpdir/scmroot/R-RMariaDB'...
$ git fetch origin 348a0899ade8ef8c58db394a19c738c3171a4418:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-RMariaDB
 * [new ref]         348a0899ade8ef8c58db394a19c738c3171a4418 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 348a089 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild