$ git clone -n https://src.fedoraproject.org/rpms/proxygen.git /var/lib/mock/f33-build-609506-67387/root/chroot_tmpdir/scmroot/proxygen
Cloning into '/var/lib/mock/f33-build-609506-67387/root/chroot_tmpdir/scmroot/proxygen'...
$ git reset --hard dd39e7fb8b8a61edd35004e930e2543004182591
HEAD is now at dd39e7f Update to 2021.04.12.00