$ git clone -n https://src.fedoraproject.org/rpms/R-IRkernel.git /var/lib/mock/f37-build-side-32-misc-devel-316322-15154/root/chroot_tmpdir/scmroot/R-IRkernel
Cloning into '/var/lib/mock/f37-build-side-32-misc-devel-316322-15154/root/chroot_tmpdir/scmroot/R-IRkernel'...
$ git reset --hard 5ce1bf4d2de6c7b7651e2f8d04a10308b6e00921
HEAD is now at 5ce1bf4 Upload sources and fix typo