$ git clone -n https://src.fedoraproject.org/rpms/R-chron.git /var/lib/mock/f37-build-642195-72061/root/chroot_tmpdir/scmroot/R-chron
Cloning into '/var/lib/mock/f37-build-642195-72061/root/chroot_tmpdir/scmroot/R-chron'...
$ git reset --hard ce88861ac692afe23ab10709497f82770f22277e
HEAD is now at ce88861 Disable bootstrap