$ git clone -n https://src.fedoraproject.org/rpms/R-dtplyr.git /var/lib/mock/f40-build-2149336-50890/root/chroot_tmpdir/scmroot/R-dtplyr
Cloning into '/var/lib/mock/f40-build-2149336-50890/root/chroot_tmpdir/scmroot/R-dtplyr'...
$ git fetch origin 1c4b9ddd14a261ec74e5dc3f5153f1a38f677bb8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-dtplyr
 * [new ref]         1c4b9ddd14a261ec74e5dc3f5153f1a38f677bb8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1c4b9dd Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild