$ git clone -n https://src.fedoraproject.org/rpms/R-microbenchmark.git /var/lib/mock/f37-build-643019-72101/root/chroot_tmpdir/scmroot/R-microbenchmark
Cloning into '/var/lib/mock/f37-build-643019-72101/root/chroot_tmpdir/scmroot/R-microbenchmark'...
$ git reset --hard b78a8ab35fb088edd4fe385674ab92d81e9692ce
HEAD is now at b78a8ab Disable bootstrap