$ git clone -n https://src.fedoraproject.org/rpms/swift-lang.git /var/lib/mock/f38-build-700136-87901/root/chroot_tmpdir/scmroot/swift-lang
Cloning into '/var/lib/mock/f38-build-700136-87901/root/chroot_tmpdir/scmroot/swift-lang'...
$ git reset --hard c00ff42793e1a6348c61372262504cba54bb9910
HEAD is now at c00ff42 Updated to Swift 5.7.3-RELEASE with patch for missing header declaration