$ git clone -n https://github.com/xcp-ng-rpms/xs-opam-repo.git /var/lib/mock/v8.1-base-1729-1206/root/chroot_tmpdir/scmroot/xs-opam-repo
Cloning into '/var/lib/mock/v8.1-base-1729-1206/root/chroot_tmpdir/scmroot/xs-opam-repo'...
$ git reset --hard 499fdcd5faa51d2e85e2eb31d9ec99293217f43f
Downloading SOURCES/xs-opam-repo-6.22.0.tar.gz (16 MB)
HEAD is now at 499fdcd Merge branch 'XS-8.1'