$ git clone -n https://src.fedoraproject.org/rpms/xrdhttpvoms.git /var/lib/mock/f29-build-6474-1588/root/thebuilddir/tmp/scmroot/xrdhttpvoms
Cloning into '/var/lib/mock/f29-build-6474-1588/root/thebuilddir/tmp/scmroot/xrdhttpvoms'...
$ git reset --hard 1b0f4ec67633d2c43777a8720ac1ec4865c3d764
HEAD is now at 1b0f4ec - Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild