$ git clone -n https://github.com/xcp-ng-rpms/xen.git /var/lib/mock/v8.3-fasttrack-8550-24600/root/chroot_tmpdir/scmroot/xen
Cloning into '/var/lib/mock/v8.3-fasttrack-8550-24600/root/chroot_tmpdir/scmroot/xen'...
$ git reset --hard 9fc7e88ab6ea4f1841baa67fd13a6ef51b79ea25
Downloading SOURCES/xen-4.17.5.tar.gz (6.7 MB)
HEAD is now at 9fc7e88 Merge branch 'XS-8.3' into 8.3-XSA-469