$ git clone -n https://src.fedoraproject.org/rpms/swift-lang.git /var/lib/mock/f33-build-339067-58625/root/chroot_tmpdir/scmroot/swift-lang
Cloning into '/var/lib/mock/f33-build-339067-58625/root/chroot_tmpdir/scmroot/swift-lang'...
$ git reset --hard cddcabc3919fcac4e4288c281d6ded46963681fc
HEAD is now at cddcabc Updated to Swift 5.2.5