$ git clone -n https://src.fedoraproject.org/rpms/rstudio.git /var/lib/mock/f38-build-side-42-init-devel-1170554-30612/root/chroot_tmpdir/scmroot/rstudio
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1170554-30612/root/chroot_tmpdir/scmroot/rstudio'...
$ git fetch origin 4ac0b1e5bc455eecbe9f0d7b0b66e0f8b4da535d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rstudio
 * [new ref]         4ac0b1e5bc455eecbe9f0d7b0b66e0f8b4da535d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4ac0b1e Update to 2023.06.1+524