$ git clone -n https://src.fedoraproject.org/rpms/R-openssl.git /var/lib/mock/f38-build-724174-99404/root/chroot_tmpdir/scmroot/R-openssl
Cloning into '/var/lib/mock/f38-build-724174-99404/root/chroot_tmpdir/scmroot/R-openssl'...
$ git fetch origin 25db9ed9178bba7587db7490577b44cdd1e5445d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-openssl
 * [new ref]         25db9ed9178bba7587db7490577b44cdd1e5445d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 25db9ed R-maint-sig mass rebuild