$ git clone -n https://src.fedoraproject.org/rpms/R-rprojroot /var/lib/mock/f41-build-side-1-3149087-40244/root/chroot_tmpdir/scmroot/R-rprojroot
Cloning into '/var/lib/mock/f41-build-side-1-3149087-40244/root/chroot_tmpdir/scmroot/R-rprojroot'...
$ git fetch origin fe35abd1311af9898e5abce8679df1b0bfa9cd55:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-rprojroot
 * [new ref]         fe35abd1311af9898e5abce8679df1b0bfa9cd55 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fe35abd Rebuilt for https://fedoraproject.org/wiki/Fedora_41_Mass_Rebuild