$ git clone -n https://src.fedoraproject.org/rpms/R-stringr.git /var/lib/mock/f37-build-side-32-misc-devel-341089-15495/root/chroot_tmpdir/scmroot/R-stringr
Cloning into '/var/lib/mock/f37-build-side-32-misc-devel-341089-15495/root/chroot_tmpdir/scmroot/R-stringr'...
$ git reset --hard 31f8fbad2984c99f30d2808cc5974f120e351ddd
HEAD is now at 31f8fba Disable bootstrap