$ git clone -n https://src.fedoraproject.org/rpms/R-styler.git /var/lib/mock/f38-build-side-42-init-devel-1080063-29825/root/chroot_tmpdir/scmroot/R-styler
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1080063-29825/root/chroot_tmpdir/scmroot/R-styler'...
$ git fetch origin b8ca28937e0553f5317e38c5484705e97ad4503e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-styler
 * [new ref]         b8ca28937e0553f5317e38c5484705e97ad4503e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b8ca289 update to 1.9.1