$ git clone -n https://github.com/xcp-ng-rpms/xen.git /var/lib/mock/v8.3-incoming-8517-25723/root/chroot_tmpdir/scmroot/xen
Cloning into '/var/lib/mock/v8.3-incoming-8517-25723/root/chroot_tmpdir/scmroot/xen'...
$ git reset --hard 895a0df0e69296b9e1bb5bb6d9a832c326807675
Downloading SOURCES/xen-4.17.5.tar.gz (6.7 MB)
HEAD is now at 895a0df Backport dd05d265b8ab "x86/intel: Fix PERF_GLOBAL fixup when virtualised"