$ git clone -n https://src.fedoraproject.org/rpms/R-diffobj.git /var/lib/mock/f37-build-641387-71928/root/chroot_tmpdir/scmroot/R-diffobj
Cloning into '/var/lib/mock/f37-build-641387-71928/root/chroot_tmpdir/scmroot/R-diffobj'...
$ git reset --hard 544c4086b50c5c4083c39969a7808e82cede2291
HEAD is now at 544c408 Disable bootstrap