$ git clone -n https://github.com/xcp-ng-rpms/xs-opam-repo.git /var/lib/mock/v8.3-incoming-6251-12498/root/chroot_tmpdir/scmroot/xs-opam-repo
Cloning into '/var/lib/mock/v8.3-incoming-6251-12498/root/chroot_tmpdir/scmroot/xs-opam-repo'...
$ git reset --hard 9b57cf86a5212e94315b8436f8e1f02ce67a98f2
Downloading SOURCES/xs-opam-repo-6.77.0.tar.gz (21 MB)
HEAD is now at 9b57cf8 Adapt to new sources