$ git clone -n https://src.fedoraproject.org/rpms/swift-lang.git /var/lib/mock/f33-build-539372-65066/root/chroot_tmpdir/scmroot/swift-lang
Cloning into '/var/lib/mock/f33-build-539372-65066/root/chroot_tmpdir/scmroot/swift-lang'...
$ git reset --hard a462054082a6d255329378c9e7b0fb558b29d2bc
HEAD is now at a462054 Updated to swift-5.3.3-RELEASE