$ git clone -n https://src.fedoraproject.org/rpms/R-nycflights13.git /var/lib/mock/f40-build-2321856-58614/root/chroot_tmpdir/scmroot/R-nycflights13
Cloning into '/var/lib/mock/f40-build-2321856-58614/root/chroot_tmpdir/scmroot/R-nycflights13'...
$ git fetch origin fdd2d3aa5b679666b8f005f49531b223ff8607a5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-nycflights13
 * [new ref]         fdd2d3aa5b679666b8f005f49531b223ff8607a5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fdd2d3a Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild