$ git clone -n https://src.fedoraproject.org/rpms/R-textshaping.git /var/lib/mock/f40-build-1930482-25111/root/chroot_tmpdir/scmroot/R-textshaping
Cloning into '/var/lib/mock/f40-build-1930482-25111/root/chroot_tmpdir/scmroot/R-textshaping'...
$ git fetch origin 2cc073532de9f5a58cd925ebf64463c4545fc57e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-textshaping
 * [new ref]         2cc073532de9f5a58cd925ebf64463c4545fc57e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2cc0735 R-maint-sig mass rebuild