$ git clone -n https://src.fedoraproject.org/rpms/nspr.git /var/lib/mock/f31-build-107558-33710/root/chroot_tmpdir/scmroot/nspr
Cloning into '/var/lib/mock/f31-build-107558-33710/root/chroot_tmpdir/scmroot/nspr'...
$ git reset --hard fcf70672e04f0889638026ace79eb7551752720d
HEAD is now at fcf7067 Update to NSPR 4.22