$ git clone -n https://github.com/xcp-ng-rpms/systemd.git /var/lib/mock/v8.3-testing-4292-4350/root/chroot_tmpdir/scmroot/systemd
Cloning into '/var/lib/mock/v8.3-testing-4292-4350/root/chroot_tmpdir/scmroot/systemd'...
$ git reset --hard 9cecfc16e19d6560e46e6899f6abdc3a4fbcfe13
Downloading SOURCES/systemd-219.tar.gz (4.8 MB)
HEAD is now at 9cecfc1 Merge branch 'XS-8.3'