$ git clone -n https://src.fedoraproject.org/rpms/nss_updatedb.git /var/lib/mock/f31-build-63656-29416/root/chroot_tmpdir/scmroot/nss_updatedb
Cloning into '/var/lib/mock/f31-build-63656-29416/root/chroot_tmpdir/scmroot/nss_updatedb'...
$ git reset --hard d90eaec8df8d90260a0b20427b3130c7f0c0db8e
HEAD is now at d90eaec - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild