$ git clone -n https://src.fedoraproject.org/rpms/R-nanotime.git /var/lib/mock/f38-build-724048-99309/root/chroot_tmpdir/scmroot/R-nanotime
Cloning into '/var/lib/mock/f38-build-724048-99309/root/chroot_tmpdir/scmroot/R-nanotime'...
$ git reset --hard 631248d60f64849b6f250cc7256a440548969596
HEAD is now at 631248d R-maint-sig mass rebuild