$ git clone -n https://src.fedoraproject.org/rpms/nspr.git /var/lib/mock/f33-build-335542-58401/root/chroot_tmpdir/scmroot/nspr
Cloning into '/var/lib/mock/f33-build-335542-58401/root/chroot_tmpdir/scmroot/nspr'...
$ git reset --hard c18bcad1f872d4131c38adcd375bf881b5edb567
HEAD is now at c18bcad Update to NSPR 4.28