$ git clone -n https://src.fedoraproject.org/rpms/swift-lang.git /var/lib/mock/f41-build-845543-162692/root/chroot_tmpdir/scmroot/swift-lang
Cloning into '/var/lib/mock/f41-build-845543-162692/root/chroot_tmpdir/scmroot/swift-lang'...
$ git reset --hard 4f6074a0c15ffff8c7a23994a99f4241e0a7cec5
HEAD is now at 4f6074a Minimize runtime/compile time dependencies