$ git clone -n https://github.com/xcp-ng-rpms/xs-opam-repo.git /var/lib/mock/v8.3-base-3916-3848/root/chroot_tmpdir/scmroot/xs-opam-repo
Cloning into '/var/lib/mock/v8.3-base-3916-3848/root/chroot_tmpdir/scmroot/xs-opam-repo'...
$ git reset --hard caa87aa21f5dc05edb6e59717c95bb7a4901e7bc
Downloading SOURCES/xs-opam-repo-6.58.0.tar.gz (13 MB)
HEAD is now at caa87aa Merge branch 'XS-8.3'